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Scientific Data Documentation
National Hospital Discharge Survey, 1995
DSN: CC36.NHDS95


Abstract
This material provides documentation for users of the 1995 NHDS Public Use 
Data Tape. The NHDS is conducted annually by the National Center for Health 
Statistics (NCHS) and is a principal source of information on inpatient 
hospital utilization in the United States. 
Section I describes the survey and includes information on the history and 
scope of the NHDS; the methodology followed, including data collection and 
medical coding procedures; population  estimates; measurement errors and
sampling errors. 

Section II provides technical details of the tape. 
Section III provides a detailed description of the
contents of each data record.  
Appendix A defines certain terms used in this document; 
Appendix B lists the ICD-9-CM Addenda; 
Appendix C provides population estimates to allow the user to calculate rates; and
Appendix D provides unweighted and weighted frequencies for selected descriptive 
variables.     
I.  DESCRIPTION OF THE NATIONAL HOSPITAL DISCHARGE SURVEY
Introduction--This document and its appendices contain information collected 
by the 1995 National Hospital Discharge Survey.  This survey, conducted by the 
National Center for Health Statistics, annually collects medical and demographic 
information from a sample of discharge records selected from a national sample of 
nonFederal, short-stay hospitals.  The data serve as a basis for calculating 
statistics on inpatient hospital utilization.  For a description of the survey 
design and data collection procedures, see below.  For a more detailed description 
of the survey design, data collection procedures, and the estimation process, 
see Reference 1.  Publications based on the data for each survey year can be
obtained from the Government Printing Office.
History--To provide more complete and precise information on the utilization of the 
Nation's hospitals and on the nature and treatment of illness among the hospitalized 
population, in 1962 the NCHS began exploring possibilities for surveying morbidity in 
hospitals.  A national advisory group was established.  The NCHS conducted planning 
discussions with other officials of the Public Health Service.  Hospitalization material 
from the Survey Research Center of the University of Michigan, the American Hospital 
Association, and the Professional Activities Study was examined and evaluated.  In 1963, 
a study by the School of Public Health of the University of Pittsburgh under contract to 
the NCHS demonstrated the feasibility of an NHDS type of program.  An additional pilot 
study using enumerators from the Bureau of the Census was conducted in late 1964 and 
confirmed the University of Pittsburgh's findings.
Finally, with advice and support from the American Hospital Association, the 
American Medical Association, individual experts, other professional groups, and 
officials of the U.S. Public Health Service, the NCHS initiated the National Hospital 
Discharge Survey in 1964. 
SURVEY METHODOLOGY
Source of the Data--The National Hospital Discharge Survey (NHDS) covers discharges
from noninstitutional hospitals, exclusive of Federal, military, and Veterans Administration
hospitals, located in the 50 States and the District of Columbia.  Only short-stay hospitals
(hospitals with an average length of stay for all patients of less than 30 days) or those 
whose specialty is general (medical or surgical) or children's general are included in the 
survey.  These hospitals must also have six or more beds staffed for patient use.  These 
criteria, used from 1988 through the current survey year, differ slightly from those used 
prior to 1988.
Beginning with 1988, the NHDS sampling frame consisted of hospitals that were listed in
the April 1987 SMG Hospital Market Tape (2), met the above criteria, and began accepting
patients by August 1987.  For 1995 the sample consisted of 525 hospitals.  Of the 525
hospitals, 17 were found to be out of scope (ineligible) because they went out of business
or otherwise failed to meet the criteria for the NHDS universe.  Of the 508 inscope (eligible)
hospitals, 466 hospitals responded to the survey.
Sample design and data collection--The NCHS has conducted the NHDS continuously since
1965.  The original sample was selected in 1964 from a frame of short-stay hospitals listed
in the National Master Facility Inventory.  That sample was updated periodically with
samples of hospitals that opened later.  Sample hospitals were selected with probabilities
ranging from certainty for the largest hospitals to 1 in 40 for the smallest hospitals.  
Within each sample hospital, a systematic random sample of discharges was selected.  A report 
on the design and development of the original NHDS has been published (1).
In 1988, the NHDS was redesigned to provide geographic sampling comparability with
other surveys conducted by the NCHS; to update the sample of hospitals selected into the
survey; and to maximize the use of data collected through automated systems.  The
redesigned NHDS sample included with certainty all hospitals with 1,000 or more beds or
40,000 or more discharges annually.  The remaining sample of hospitals was based on a
stratified, three-stage design.  The first stage consisted of selecting 112 primary sampling
units (PSU's) that comprised a probability subsample of PSU's used in the 1985-94 National
Health Interview Survey.  The second stage consisted of selecting non-certainty hospitals
from the sample PSU's.  At the third stage a sample of discharges was selected by a
systematic random sampling technique. 
These changes in the survey may affect trend data; that is, some of the differences between
NHDS statistics based on the 1965-87 sample and statistics based on the sample drawn for
the new design may be due to sampling error rather than actual changes in hospital
utilization.  
Two data collection procedures were used for the survey.  The first was a manual system of
sample selection and data abstraction, used for approximately 67 percent of the responding
hospitals.   The second was an automated method, used for approximately 33 percent of the
respondent hospitals, that involved the purchase of computerized data tapes from abstracting
service organizations, state data systems, or from the hospitals themselves.
In the manual system, the sample selection and the transcription of information from the
hospital records to abstract forms were performed at the hospitals.  Of the hospitals using
this system in 1995, about 53 percent had the work performed by their own medical records
staff.  In the remaining hospitals using the manual system, personnel of the U.S. Bureau of
the Census did the work on behalf of NCHS.  The completed forms, along with sample
selection control sheets, were forwarded to NCHS for coding, editing, and weighting. 
For the automated system, NCHS purchased tapes containing machine-readable medical
record data from which records were systematically sampled by NCHS.
The Medical Abstract Form (Figure 1) and the automated data contain items relating to the
personal characteristics of the patient, including birth date or age, sex, race, and marital
status, but not name and address; administrative information, including admission and
discharge dates, discharge status, and medical record number; and medical information,
including diagnoses and surgical and nonsurgical procedures.  Since 1977, patient zip code,
expected source of payment, and dates of surgery have also been collected.  (The medical
record number, date of birth, and patient zip code are confidential information and are not
available to the public.)
Medical Coding and Edit--The medical information that was recorded manually on the
sample patient abstracts was coded centrally by NCHS staff.  A maximum of seven
diagnostic codes was assigned for each sample abstract; in addition, if the medical
information included surgical or nonsurgical procedures, a maximum of four codes for these
procedures was assigned.  The system currently used for coding the diagnoses and
procedures on the medical abstract forms as well as on the commercial abstracting services
data tapes is the International Classification of Diseases, 9th Revision, Clinical Modifica
tion, or ICD-9-CM (3).
NHDS usually presents diagnoses and procedures in the order they are listed on the abstract
form or obtained from abstract services; however, there are exceptions.  For women
discharged after a delivery, a code of V27 from the supplemental classification is entered as
the first-listed code, with a code designating either normal or abnormal delivery in the
second-listed position.  In another exception, a decision was made to reorder some acute
myocardial infarction diagnoses.  If an acute myocardial infarction is listed with other
circulatory diagnoses and is other than the first entry, it is reordered to first position.  If a
symptom appears as a first-listed code and a diagnosis appears as a secondary code, the
diagnosis replaces the symptom which is moved back.  
Figure 1.  Medical abstract for the 1995 National Hospital Discharge SurveyFollowing conversion of the data on the medical abstract to computer tape and combining
it with the automated data tapes, a final medical edit was accomplished by computer
inspection and by a manual review of rejected records.  Priority was given to medical
information in the editing decision.
Users of the National Hospital Discharge Survey (NHDS) diagnostic and/or procedure data,
which is coded to the ICD-9-CM, must take into account annual ICD-9-CM addenda.  The
addenda lists new codes, new fourth or fifth digits to existing codes, as well as other
modifications.  Changes go into effect October 1 of the calendar year.  A list of the changes
for 1986 through 1994 are listed in Appendix B.  All coding of the 1995 data is consistent
with the ICD-9-CM and the addendum effective October 1, 1994.  Information provided by
automated systems for the last three months of 1995 which was coded using the October
1995 addendum was converted back to the previous code assignment.  This was done in
order to prevent NHDS data users from mistaking partial year estimates for annual estimates. 
The Uniform Hospital Discharge Data Set (UHDDS)--Starting with 1979 data, the NHDS
has followed guidelines of the Uniform Hospital Discharge Data Set (UHDDS) within the
confines of its contractual agreement with participating hospitals.  The UHDDS is a
minimum data set of items uniformly defined (4).  These items were selected on the basis
of their usefulness to a broad range of organizations and agencies requiring hospital
information, uniformity of definition, and general availability from medical records and
abstract services.
Population Estimates--Appendix C shows population estimates provided by the U.S. Bureau
of the Census.  The estimates are of the U.S. civilian resident population on July l of the data
year.  These population estimates are consistent with those published in Current Population
Reports, Series P-25; however, they are not official population estimates of the Bureau of
the Census.
Measurement Errors--As in any survey, results are subject to nonsampling or measurement
errors, which include errors due to hospital nonresponse, missing abstracts, information
incompletely or inaccurately recorded on abstract forms, and processing errors.  A very small
proportion, (less than one-half of one percent) of the discharge records failed to include the
sex, age, or date of birth of the patient. If the hospital record did not state either the age or
sex of patient, it was imputed by assigning an age or sex consistent with the age or sex of
other sampled patients with the same diagnostic code. In a very few cases (about a quarter
of a percent of the records), the age or sex was edited, because it was inconsistent with the
diagnosis.  Data on race was missing for 21.3 percent of the discharges, and no attempt was
made to impute for these missing values.
During 1995, 12.5 percent of the records lacked the day of admission or day of discharge,
but included a length of stay and a discharge month.  For these records, a discharge day of
the 20th of the month was assigned to the record and the admission date was computed
based on the given length of stay.  Other edit and imputation procedures may have been
applied to data in the NHDS collected in automated form.
Sampling errors and rounding of numbers--The standard error is primarily a measure of
sampling variability that occurs by chance because only a sample rather than the entire
universe is surveyed.  The relative standard error of the estimate is obtained by dividing the
standard error by the estimate itself.  The resulting value is multiplied by 100, so the relative
standard error is expressed as a percent of the estimate.  Estimates of sampling variability
were calculated with SUDAAN software, which computes standard errors by using a first-
order Taylor series approximation of the deviation of estimates from their expected values. 
A description of the software and the approach it uses was published by Shah, Barnwell, and
Bieler (5).

Relative Standard Errors for Aggregate Estimates
Approximate relative standard errors for aggregate estimates are presented in Table 1.  To
derive error estimates that would be applicable to a wide variety of statistics, numerous
variances were calculated and a best fit formula was produced.  The curves were based on
an empirically determined relationship between the size of an estimate X and its relative
variance.  The relative standard error is then derived by taking the square root of the relative
variance.  The relative standard error of an estimate X [RSE(X)], expressed as a percent,
may be calculated from the formula:
RSE (X)~=~100~*~~SQRT { a~+~b/X } 
with a and b provided in Table 1.
For example, in 1995 the estimated number of discharges from short-stay hospitals for
females with a first-listed diagnosis of atherosclerotic heart disease (ICD-9-CM code 414.0)
was 328,000.  Using the applicable constants from Table 1 for estimates by sex produces:
          RSE (328,000) = 100 * SQRT {.001318 + (375.570/328,000)}
                     RSE(328,000)  =  4.96 %
The relative standard error for the estimate of interest is 4.96 percent.  From this the standard
error is obtained by multiplying the relative standard error by the estimate:
         SE(328,000)  =  328,000 * 4.96%  =  16,269     
The standard error can be employed to generate confidence intervals for statistical testing. 
In this example, the 95% confidence interval for the estimate of female inpatients with a
first-listed diagnosis of atherosclerotic heart disease is:
         (328,000 - 2*16,269)  <->   (328,000 + 2*16,269)
                    295,462   <->   360,538

Relative Standard Error for Estimates of Percents
Approximate relative standard errors for estimates of percents may be calculated from Table
1 also.  The relative standard error for a percent, 100 p (0<p<1), (expressed as a percent),
may be calculated using the formula:
RSE(p) = 100 *  SQRT {b * (1 - p)/(p * X)} 
where 100p is the percent of interest, X is the base of the percent, and b is the parameter b
in the formula for approximating the RSE(X).  The values for b are given in Table 1.
For example, in 1995 the estimated number of discharges from short-stay hospitals which
were female was 18,525,000.  This is 60.3 percent of the estimated 30,722,000 discharges
for that year.  Using the applicable constants from Table 1 for estimates by sex produces:
RSE(.603) =  100 *  SQRT {375.570 * (1 - .603)/(.603 * 30,722,000)} 
                         RSE(.603)  =  0.2837%
The relative standard error for the estimate of interest is 0.2837 percent.  From this the
standard error is obtained by multiplying the relative standard error by the estimate:
                 SE(.603)  =  .603 * 0.2837%  =  .0017.        
The standard error can be employed to generate confidence intervals for statistical testing. 
In this example, the 95% confidence interval for the estimate of the percentage of female
inpatients is:
               (.603 - 2 *.0017)   <->   (.603 + 2 *.0017)
                          .5996   <->   .6064
or, equivalently,       59.96%    <->   60.64%
Table 1.  Parameter values for relative standard errors for National Hospital Discharge
Survey aggregate statistics by statistic type:  United States, 1995
Parameter Estimates for Number of First-Listed Diagnoses -- 1995 NHDS
Parameter Estimates for Number of First-Listed Diagnoses -- 1995 NHDS

a

b

TOTAL

0.001470

383.006

MALE

0.001760

337.999

FEMALE

0.001318

375.570

UNDER 15 YEARS

0.017012

204.502

15-44 YEARS

0.001562

344.452

45-64 YEARS

0.001346

346.329

65 YEARS & OVER

0.001742

362.499

NORTHEAST REGION

0.005335

242.463

MIDWEST REGION

0.007528

206.001

SOUTH REGION

0.005192

391.875

WEST REGION

0.004464

356.516

WORKER'S COMPENSATION

0.005369

261.892

MEDICARE

0.002025

361.087

MEDICAID

0.004874

272.861

OTHER GOVT PAYMENTS

0.016884

306.984

PRIVATE INSURANCE

0.001855

359.874

SELF PAY

0.004979

288.710

NO CHARGE/OTHER PYMTS

0.027670

213.612

PAYMENT NOT STATED

0.032245

638.678

WHITE RACE

0.003175

393.713

BLACK RACE

0.007613

223.320

ALL OTHER RACES

0.022422

174.594

RACE NOT STATED

0.019735

254.547

Parameter Estimates for Number of All-Listed Diagnoses -- 1995 NHDS

a

b

TOTAL

0.001830

416.120

MALE

0.002143

394.996

FEMALE

0.001880

352.920

UNDER 15 YEARS

0.013717

274.540

15-44 YEARS

0.002528

330.180

45-64 YEARS

0.001584

370.660

65 YEARS & OVER

0.001988

404.887

NORTHEAST REGION

0.005105

255.647

MIDWEST REGION

0.007693

192.250

SOUTH REGION

0.006951

428.100

WEST REGION

0.005627

384.339

WORKER'S COMPENSATION

0.008805

269.628

MEDICARE

0.002326

410.834

MEDICAID

0.006336

252.916

OTHER GOVT PAYMENTS

0.015701

388.033

PRIVATE INSURANCE

0.002363

331.826

SELF PAY

0.005933

328.823

NO CHARGE/OTHER PYMTS

0.029890

222.305

PAYMENT NOT STATED

0.042549

384.083

WHITE RACE

0.003802

420.239

BLACK RACE

0.008472

221.903

ALL OTHER RACES

0.025330

160.003

RACE NOT STATED

0.020261

265.211

Parameter Estimates for Number of Days of Care -- 1995 NHDS

a

b

TOTAL

0.004678

810.910

MALE

0.003051

1216.430

FEMALE

0.005842

741.020

UNDER 15 YEARS

0.019964

576.270

15-44 YEARS

0.003015

1185.440

45-64 YEARS

0.002950

1225.550

65 YEARS & OVER

0.002789

1852.770

NORTHEAST REGION

0.009606

529.150

MIDWEST REGION

0.009445

652.660

SOUTH REGION

0.005597

1333.620

WEST REGION

0.008591

1042.910

WORKER'S COMPENSATION

0.010907

723.980

MEDICARE

0.002981

1998.120

MEDICAID

0.007343

1117.820

OTHER GOVT PAYMENTS

0.024521

1257.190

PRIVATE INSURANCE

0.003235

1072.380

SELF PAY

0.011089

1241.880

NO CHARGE/OTHER PYMTS

0.044565

532.200

PAYMENT NOT STATED

0.045044

1859.050

WHITE RACE

0.004956

841.730

BLACK RACE

0.011020

862.19

ALL OTHER RACES

0.030357

755.670

RACE NOT STATED

0.037472

1006.290

Parameter Estimates for Number of All-Listed Procedures -- 1995 NHDS

a

b

TOTAL

0.002292

338.540

MALE

0.002633

350.456

FEMALE

0.002195

342.400

UNDER 15 YEARS

0.020369

261.921

15-44 YEARS

0.003580

355.115

45-64 YEARS

0.002882

319.558

65 YEARS & OVER

0.002971

315.118

NORTHEAST REGION

0.006875

262.270

MIDWEST REGION

0.009340

178.460

SOUTH REGION

0.004027

330.110

WEST REGION

0.007656

381.790

WORKER'S COMPENSATION

0.014989

151.134

MEDICARE

0.003266

318.767

MEDICAID

0.006438

241.779

OTHER GOVT PAYMENTS

0.021322

256.159

PRIVATE INSURANCE

0.002758

339.577

SELF PAY

0.009506

240.855

NO CHARGE/OTHER PYMTS

0.035172

220.024

PAYMENT NOT STATED

0.039598

233.786

WHITE RACE

0.004330

356.546

BLACK RACE

0.008749

232.021

ALL OTHER RACES

0.022639

194.201

RACE NOT STATED

0.020182

264.704

Presentation of Estimates--Publication of estimates for the NHDS is based on the relative
standard error of the estimate and the number of sample records on which the estimate is
based (referred to as the sample size).  Estimates are not presented in NCHS reports unless
a reasonable assumption regarding the probability distribution of the sampling error is
possible.
Based on consideration of the complex sample design of the NHDS, the following
guidelines are used for presenting the NHDS estimates:
If the sample size is less than 30, the value of the estimate is 
not reported.
If the sample size is 30-59, the value of the estimate is reported 
but should not be assumed reliable.
If the sample size is 60 or more and the relative standard error is 
less than 30 percent, the estimate is reported. 
If the sample size is 60 or more but the relative standard error is 
over 30 percent, the estimate is reported but should not be assumed 
reliable.
Monthly and Seasonal Estimates Under the New Design--An important difference between
the old and new designs is the method used to adjust for nonresponse.  In the old design,
weights for responding hospitals were adjusted each month to account for hospitals that did
not respond for that month.  In the new design, the type of nonresponse adjustment applied
depended on whether the hospital was considered a nonrespondent or partial respondent. 
A nonresponding hospital was one which failed to provide at least half of the expected
number of discharges for at least half of the months for which it was inscope.  In this case,
weights of discharges from hospitals similar to the nonresponding hospital were inflated
to account for discharges of the nonrespondent hospital.  However, this adjustment was
performed just once, after the close out of the survey for the year, instead of monthly as
before.  
For partially responding hospitals, one or both of two adjustments were made.  If the
hospital provided at least half, but not all, of the expected number of abstracts for a given
month, the weights of the abstracts actually collected for that month were inflated to
account for the missing abstracts.  If fewer than half of the expected number of abstracts
were provided, the weights of the abstracts provided were inflated by a factor of two, then
a second adjustment was made to account for the excess nonresponse.  In the second
adjustment, the weights of the discharges in the hospital's respondent months were inflated
by ratios that varied by category of first-listed ICD-9-CM diagnostic code.  This
adjustment ratio was based on the hospital's month(s) of nonresponse and the month-by-
month distributions of first-listed diagnostic groups among discharges from hospitals which
responded for all twelve months.  The ratio accounts for the seasonality in the occurrence
of the first-listed diagnostic groups for annual statistics, but not for partial year estimates. 
As a result monthly and seasonal estimates may be skewed.  While the effect is believed
to be small, it is recommended that partial year estimates NOT be produced.  In the 1995
NHDS, 90 percent of the 466 responding hospitals provided data for all twelve months,
and 96 percent provided at least 9 months of data. 
How to Use the Data Tape--The NHDS records are weighted to allow inflation to national
or regional estimates.  The weight applied to each record is found in tape location 21-25. 
To produce an estimate of the number of discharges, the weights for the desired records
must be summed.  To produce an estimate for number of days of care, the weight must be
multiplied by the days of care (tape location 13-16) and these products are summed. 
Average length of stay data can be obtained by dividing the days of care by the number of
discharges as calculated above.
Appendix D contains unweighted and weighted frequencies for selected variables on the
data tape.  These may be used as a cross-check when processing the data on the user's
system.
Diagnosis-Related Groups (DRGs)--Many users of the NHDS data tapes have expressed
an interest in converting the data to DRGs.  This has been done using DRG Grouper
Programs obtained from the Health Care Financing Administration.  The DRGs and the
DRG Grouper Programs were developed outside of the National Center for Health
Statistics; any questions about DRGs, other than specific questions about how they relate
to NHDS data, should be addressed elsewhere.
Questions--Questions concerning data on the tape should be directed to Maria Owings,
Ph.D., Hospital Care Statistics Branch, Division of Health Care Statistics, National Center
for Health Statistics, Presidential Building, Room 956, 6525 Belcrest Road, Hyattsville,
Maryland  20782, (301)-436-7125.
REFERENCES
1. National Center for Health Statistics:  Development of the design of the 
   NCHS Hospital Discharge Survey, by W. R. Simmons.  Vital and Health  Statistics.  
   PHS Pub. No. 1000, Series 2-No. 39.  Public Health Service.  Washington.  U.S. 
   Government Printing Office, Sept. 1970.
2. SMG Hospital Marketing Group, Inc. 1989. Hospital Market Database.  
   Healthcare Information Specialists, 1342 North LaSalle Drive, Chicago, Illinois.
3. National Center for Health Statistics:  International Classification of Diseases, 
   9th Revision, Clinical Modification.  DHHS Pub. No. (PHS) 80-1260.  Public Health 
   Service.  Washington.  U.S. Government Printing Office, Sept. 1980.
4. Office of the Secretary, Department of Health and Human Services:  Health 
   Information Policy Council: 1984 Revision of the Uniform Hospital Discharge 
   Data Set.  Federal Register, Volume 50, No. 147. July 31, 1985.
5. Shah, Babubhai.V., Beth G. Barnwell, and Gayle S. Bieler.  SUDAAN User's Manual:
   Software for Analysis of Correlated Data, Release 6.40.   Research Triangle 
   Institute:  Research Triangle Park, N.C. 1995.
II.  TECHNICAL DESCRIPTION OF TAPE
Data Set Name-------------------------------------------BG00.NHDS95.PU
Number of REELS or CARTRIDGES----------------------------------------1
Number of Recording Tracks, REEL-------------------------------------9
Number of Recording Tracks, CARTRIDGE-------------------------------18
Density for REEL (bpi)-------------------------------------------6,250
Density for CARTRIDGE (bpi)-------------------------------------38,000
Language--------------------------------------------------------EBCDIC
Parity-------------------------------------------------------------Odd
Record Length-------------------------------------------------------81
Block Size------------------------------------------------------16,200
Number of Records----------------------------------------------262,809       


III.  RECORD FORMAT: Location and Coding of Data Elements
     This section provides detailed information for each sampled record on the
     tape, with a description of each item included in the record. Data elements
     are arranged sequentially according to their physical location on the tape
     record.  Unless otherwise stated in the Item Description, the data are derived
     from the abstract form or from automated sources.  The SMG Hospital
     Market Tape and the hospital interview are alternate sources of data; some
     other items are computer generated.
 Item       Tape        Number of
Number     Location     Positions   Item Description and Codes
  1            1-2           2         Survey Year: 95
  2             3            1         Newborn Status:  1 = Newborn
                                                        2 = Not Newborn
  3             4            1         Units for Age:   1 = Years
                                                        2 = Months
                                                        3 = Days
  4            5-6           2         Age in years, months, or days: 
                                              If Units = Years:   0-99*
                                              If Units = Months:  01-11
                                              If Units = Days:    00-31
  5             7            1         Sex:  1 = Male
                                             2 = Female
  6             8            1         Race: 1 = White  
                                             2 = Black
                                             3 = American Indian/Eskimo
                                             4 = Asian/Pacific Islander
                                             5 = Other
                                             9 = Not Stated
  7             9            1         Marital Status:  1 = Married
                                                        2 = Single
                                                        3 = Widowed
                                                        4 = Divorced
                                                        5 = Separated
                                                        6 = Unknown
                                                        9 = Not Stated
  8           10-11           2      Month of Admission:  
                                          01-12:  January to December
  
----------------------------------------------------------------------
* Ages 100 and over were recoded to 99.
 Item        Tape       Number of
Number     Location     Positions    Item Description and Codes
   9            12          1          Discharge Status:
                                                1 = Routine/Discharged Home
                                                2 = Left Against Medical Advice
                                                3 = Discharged/Transferred to 
                                                     Short-Term Facility 
                                                4 = Discharged/Transferred to
                                                      Long-Term Care Institution
                                                5 = Alive, Disposition Not Stated
                                                6 = Dead
                                                9 = Not Stated or Not Reported  
  10          13-16        4          Days of Care:
                                           Use to calculate number of days of care;
                                           Values of zero generated by the computer
                                           from admission and discharge dates were
                                           changed to one.  (Discharges for which
                                           dates of admission and discharge are the
                                           same are identified in Item Number 11.)
  11             17          1          Length of Stay Flag:  
                                             0 = Less than 1 day
                                             1 = 1 day or more
  12             18          1          Geographic Region:  1 = Northeast
                                                            2 = Midwest
                                                            3 = South
                                                            4 = West
  13             19          1           Number of Beds, Recode: 1 = 6-99
                                                                 2 = 100-199
                                                                 3 = 200-299
                                                                 4 = 300-499
                                                                 5 = 500 and over
  14             20          1           Hospital Ownership:  1 = Proprietary
                                                              2 = Government
                                                              3 = Nonprofit, including Church
 
 Item        Tape      Number of
Number     Location    Positions    Item Description and Codes
  15         21-25         5         Analysis Weight:  Use to obtain weighted estimates
  16           26          1         Principal Expected Source of Payment:
                                               0 = No Charge                            
                                               1 = Workmen's Compensation
                                               2 = Medicare
                                               3 = Medicaid
                                               4 = Other Govt Payments, incl. Title V
                                               5 = Blue Cross
                                               6 = Other Private/Commercial Insurance
                                               7 = Self-Pay
                                               8 = Other
                                               9 = Not Stated 
  17           27           1         Secondary Expected Source of Payment:
                                               Same coding as item 16
  18         28-32          5        Diagnosis Code #1 *
  19         33-37          5        Diagnosis Code #2 *
  20         38-42          5        Diagnosis Code #3 *
  21         43-47          5        Diagnosis Code #4 *
  22         48-52          5        Diagnosis Code #5 *
  23         53-57          5        Diagnosis Code #6 *
  24         58-62          5        Diagnosis Code #7 *
  25         63-66          4        Procedure Code #1 *
  26         67-70          4        Procedure Code #2 *
  27         71-74          4        Procedure Code #3 *
  28         75-78          4        Procedure Code #4 *
  29         79-81          3        DRG, Grouper Version 12.0
-------------------------------------------------------------------------------
* Codes are in compliance with the International Classification of Diseases, 
  9th Revision, Clinical Modification, (ICD-9-CM).  For diagnosis codes, 
  there is an implied decimal between positions 3 and 4.  For E-codes, the 
  implied decimal is between the 4th and 5th position.  For inapplicable 4th 
  or 5th digits, a dash is inserted.  For procedure codes, there is an implied 
  decimal between positions 2 and 3.  For inapplicable 3rd or 4th digits, a 
  dash is inserted.
--------------------------------------------------------------------------------

If you have any suggestions about how to better provide NHDS data by DRGs to NHDS data users, please write to Maria Owings, NCHS, Room 956,
6525 Belcrest Road, Hyattsville, MD  20782.  Your assistance is greatly appreciated.
APPENDIX A
DEFINITION OF TERMS
Terms relating to hospitals and hospitalization
Hospitals-Short-stay hospitals or hospitals whose specialty is general (medical or surgical), or
children's general.  Hospitals must have 6 beds or more staffed for patients use.  Federal hospitals
and hospital units of institutions are not included.
Type of ownership of  hospital-The type of organization that controls and operates the hospital. 
Hospitals are grouped as follows:
  Not for Profit-Hospitals operated by a church or another not for profit 
                 organization.
  Government-Hospitals operated by State and local government.
  Proprietary-Hospitals operated by individuals, partnerships, or 
              corporations for profit.
Patient-A person who is formally admitted to the inpatient service of a short-stay hospital for
observation, care, diagnosis, or treatment, or by birth. 
Discharge-The formal release of a patient by a hospital; that is, the termination of a period of
hospitalization by death or by disposition to place of residence, nursing home, or another hospital. 
The terms "discharges" and "patients discharged" are used synonymously.
Discharge rate-The ratio of the number of hospital discharges during the year to the number of
persons in the civilian population on July 1 of that year.
Days of care-The total number of patient days accumulated at time of discharge by patients
discharged from short-stay hospitals during a year.  A stay of less than 1 day (patient admission
and discharge on the same day) is counted as 1 day in the summation of total days of care.  For
patients admitted and discharged on different days, the number of days of care is computed by
counting all days from (and including) the date of admission to (but not including) the date of
discharge.
Rate of days of care-The ratio of the number of patient days accumulated at time of discharge to
the number of persons in the civilian population on July 1 of that year.
Average length of stay-The total number of days of care accumulated at time of discharge by
patients discharged during the year, divided by the number of patients discharged. 
Terms relating to diagnoses and procedures
Discharge diagnoses-One or more diseases or injuries (or some factor that influences health status
and contact with health services that is not itself a current illness or injury) listed by the attending
physician on the medical record of a patient.  In the NHDS, discharge (or final) diagnoses listed
on the face sheet (summary sheet) of the medical record are transcribed in the order listed.  Each
sample discharge is assigned a maximum of seven five-digit codes according to ICD-9-CM (2).
Principal diagnosis-The condition established after study to be chiefly responsible for occasioning
the admission of the patient to the hospital for care.
First-listed diagnosis-The coded diagnosis identified as the principal diagnosis or listed first on
the face sheet of the medical record if the principal diagnosis cannot be identified. The number of
first-listed diagnoses is equivalent to the number of discharges
Procedure-One or more surgical or nonsurgical operations, procedures, or special treatments
listed by the physician on the medical record.  In the NHDS, all terms listed on the face sheet
(summary sheet) of the medical record under the caption "operation," "operative procedures,"
"operations and/or special treatment," and the like are transcribed in the order listed.  A maximum
of four procedures are coded.
Rate of procedures-The ratio of the number of all-listed procedures during a year to the number
of persons in the civilian population on July 1 of that year determines the rate of procedures.
Demographic terms
Age-Refers to the age of the patient on the birthday prior to admission to the hospital inpatient
service.
Population-Civilian population is the resident population excluding members of the Armed
Forces.
Geographic regions-Hospitals are classified by location in one of the four geographic regions of
the United States corresponding to those used by the U.S. Bureau of the Census:
Geographic Region   States included
Northeast........Maine, New Hampshire, Vermont
                 Massachusetts, Rhode Island,
                 Connecticut, New York, New Jersey,
                 and Pennsylvania
Midwest..........Michigan, Ohio, Illinois, Indiana,
                 Wisconsin, Minnesota, Iowa,
                 Missouri, North Dakota,
                 South Dakota, Nebraska,
                 and Kansas
South...........Delaware, Maryland, District of
                Columbia, Virginia, West Virginia,
                North Carolina, South Carolina, Georgia,
                Florida, Kentucky, Tennessee, Alabama,
                Mississippi, Arkansas, Louisiana,
                Oklahoma, and Texas
West............Montana, Idaho, Wyoming,
                Colorado, New Mexico, Arizona,
                Utah, Nevada, Washington, Oregon,
                California, Hawaii, and Alaska
APPENDIX B 
The International Classification of Diseases, 9th Revision, Clinical Modification, which
has been used for coding NHDS data since 1979, undergoes annual updating.  Assignment of new
diagnostic and procedure codes, fourth and fifth digit expansion of codes, as well as code
deletions, are contained in addenda developed by the ICD-9-CM Coordination and Maintenance
Committee and approved by the Director of NCHS and the Administrator of the Health Care
Financing Administration.  Addenda to the ICD-9-CM become effective on October 1 of the
calendar year and have been released for 1986 through 1995. 
As described earlier in this document, the 1995 NHDS involved two data collection modes: 
manual and abstract service.  All data collected manually were coded using the third edition of the
ICD-9-CM, which includes the addenda for 1986 through 1994.  Data collected via abstract
service were coded using two different ICD-9-CM revisions.  For the first 9 months of 1995, the
ICD-9-CM including the addendum of October 1, 1986-94 was used; for the last 3 months the
October 1995 addendum was used.  Therefore, data provided by automated systems for the last
three months of 1995 was converted back to the code assignment under the October 1994
addendum.  This was done in order to prevent NHDS data users from mistaking partial year
estimates for annual estimates.    
In order to assist users in data retrieval, a conversion table is  provided that shows the date
of introduction of each new code and the previously assigned code equivalent, which had been
used for reporting the selected diagnosis or procedure prior to issuance of the new code.
DIAGNOSIS CODES
Current code(s) assignment

Effective October 1

Previous code(s) assignment
008.00-008.09

1992

008.0
008.43-008.47

1992

008.49
008.61-008.69

1992

008.6
041.00-041.09

1992

041.0
041.10-041.19

1992

041.1
041.81-041.89

1992

041.8
042

1994

042.0-042.2,042.9,043.0-043.3,
043.9,044.0,044.9
042.0-042.9

1986

279.19
043.0-043.9

1986

279.19
044.0-044.9

1986

279.19
070.20-070.21

1991

070.2
070.22

1994

070.20
070.23

1994

070.21
070.30-070.31

1991

070.3
070.32

1994

070.30
070.33

1994

070.31
070.41-070.49

1991

070.4
070.44

1994

070.41
070.51-070.59

1991

070.5
070.54

1994

070.51
077.98-077.99

1993

077.9
078.10-078.11,078.19

1993

078.1
078.88

1993

078.89
079.4

1993

079.8
079.50-079.53,079.59

1993

079.8
079.88-079.89

1993

079.8
079.98-079.99

1993

079.9
088.81,088.89

1989

088.8
088.82

1993

088.89
099.40-099.49

1992

099.4
099.50-099.59

1992

078.89
112.84-112.85

1992

112.89
114.4-114.5

1993

114.3
176.0-176.9

1991

173.0-173.9
203.00

1991

203.0
203.01

1991

V10.79
203.10

1991

203.1
203.11

1991

V10.79
203.80

1991

203.8
203.81

1991

V10.79
204.00

1991

204.0
204.01

1991

V10.61
204.10

1991

204.1
204.11

1991

V10.61
204.20

1991

204.2
204.21

1991

V10.61
204.80

1991

204.8
204.81

1991

V10.61
204.90

1991

204.9
204.91

1991

V10.61
205.00

1991

205.0
205.01

1991

V10.62
205.10

1991

205.1
205.11

1991

V10.62
205.20

1991

205.2
205.21

1991

V10.62
205.30

1991

205.3
205.31

1991

V10.62
205.80

1991

205.8
205.81

1991

V10.62
205.90

1991

205.9
205.91

1991

V10.62
206.00

1991

206.0
206.01

1991

V10.63
206.10

1991

206.1
206.11

1991

V10.63
206.20

1991

206.2
206.21

1991

V10.63
206.80

1991

206.8
206.81

1991

V10.63
206.90

1991

206.9
206.91

1991

V10.63
207.00

1991

207.0
207.01

1991

V10.69
207.10

1991

207.1
207.11

1991

V10.69
207.20

1991

207.2
207.21

1991

V10.69
207.80

1991

207.8
207.81

1991

V10.69
208.00

1991

208.0
208.01

1991

V10.60
208.10

1991

208.1
208.11

1991

V10.60
208.20

1991

208.2
208.21

1991

V10.60
208.80

1991

208.8
208.81

1991

V10.60
208.90

1991

208.9
208.91

1991

V10.60
237.70-237.72

1990

237.7
250.02

1993

250.90
250.03

1993

250.91
250.12

1993

250.10
250.13

1993

250.11
250.22

1993

250.20
250.23

1993

250.21
250.32

1993

250.30
250.33

1993

250.31
250.42

1993

250.40
250.43

1993

250.41
250.52

1993

250.50
250.53

1993

250.51
250.62

1993

250.60
250.63

1993

250.61
250.72

1993

250.70
250.73

1993

250.71
250.82

1993

250.80
250.83

1993

250.81
250.92

1993

250.90
250.93

1993

250.91
283.10-283.11,283.19

1993

283.1
305.1

1994

305.10,305.11,305.12,
305.13 (delete code)
320.81-320.89

1992

320.8
312.81-312.82,381.89

1994

312.8
333.92-333.93

1994

333.99
337.20-337.22,337.29

1993

337.5
342.00-342.02

1994

342.0
342.10-342.12

1994

342.1
342.80-342.82

1994

342.9
342.90-342.92

1994

342.9
344.00-344.04,344.09

1994

344.0
344.30-344.32

1994

344.3
344.40-344.42

1994

344.4
344.81-344.89

1993

344.8
345.00-345.01

1989

345.0
345.10-345.11

1989

345.1
345.40-345.41

1989

345.4
345.50-345.51

1989

345.5
345.60-345.61

1989

345.6
345.70-345.71

1989

345.7
345.80-345.81

1989

345.8
345.90-345.91

1989

345.9
346.00-346.01

1992

346.0
346.10-346.11

1992

346.1
346.20-346.21

1992

346.2
346.80-346.81

1992

346.8
346.90-346.91

1992

346.9
355.71

1993

354.4
355.79

1993

355.7
371.82

1992

371.89
374.87

1990

374.89
403.00-403.01

1989

403.0
403.10-403.11

1989

403.1
403.90-403.91

1989

403.9
404.00-404.03

1989

404.0
404.10-404.13

1989

404.1
404.90-404.93

1989

404.9
410.00-410.02

1989

410.0
410.10-410.12

1989

410.1
410.20-410.22

1989

410.2
410.30-410.32

1989

410.3
410.40-410.42

1989

410.4
410.50-410.52

1989

410.5
410.60-410.62

1989

410.6
410.70-410.72

1989

410.7
410.80-410.82

1989

410.8
410.90-410.92

1989

410.9
411.81

1989

410.9
411.89

1989

411.8
414.00-414.01

1994

414.0
414.02-414.03

1994

996.03
429.71

1989

410.0-410.9
429.79

1989

410.0-410.9
433.00-433.01

1993

433.0
433.10-433.11

1993

433.1
433.20-433.21

1993

433.2
433.30-433.31

1993

433.3
433.80-433.81

1993

433.8
433.90-433.91

1993

433.9
434.00-434.01

1993

434.0
434.10-434.11

1993

434.1
434.90-434.91

1993

434.9
437.7

1992

780.9
440.20-440.22

1992

440.2
440.23

1993

440.20 & 707.1 or 707.8 or 707.9
440.24

1993

440.20 & 785.4
440.29

1993

440.20
440.30-440.32

1994

996.1
441.00-441.03

1994

441.0
441.6

1993

441.1 & 441.3
441.7

1993

441.2 & 441.4
446.20-446.21,446.29

1990

446.2
451.82-451.84

1993

451.89
482.30-482.39

1992

482.3
482.81-482.89

1992

482.8
483.0

1992

483
483.8

1992

483
491.20-491.21

1991

491.2
493.20

1989

493.90
493.21

1989

493.91
512.1

1994

997.3
518.81

1987

799.1
518.82-518.89

1987

518.8
524.00-524.09

1992

524.0
524.10-524.19

1992

524.1
524.60-524.69

1991

524.6
524.70-524.79

1992

524.8
530.10-530.11, 530.19

1993

530.1
530.81

1993

530.1
530.82-530.84, 530.89

1993

530.8
535.00-535.01

1991

535.0
535.10-535.11

1991

535.1
535.20-535.21

1991

535.2
535.30-535.31

1991

535.3
535.40-535.41

1991

535.4
535.50-535.51

1991

535.5
535.60-535.61

1991

535.6
536.3

1994

536.8
537.82

1990

537.89
537.83

1991

537.82
556.0-556.6

1994

556
556.8-556.9

1994

556
562.02

1991

562.00
562.03

1991

562.01
562.12

1991

562.10
562.13

1991

562.11
569.84

1990

557.1
569.85

1991

569.84
593.70-593.73

1994

593.7
596.51-596.53

1992

596.5
596.54

1992

344.61
596.55-596.59

1992

596.5
599.81-599.89

1992

599.8
645.0

1991

645
651.30-651.31,651.33

1989

651.00-651.01,651.03
651.40-651.41,651.43

1989

651.10-651.11,651.13
651.50-651.51,651.53

1989

651.20-651.21,651.23
651.60-651.61,651.63

1989

651.80-651.81,651.83
654.20-654.21,654.23

1990

654.2,654.9
654.90-654.94

1990

654.2,654.9
657.0

1991

657
659.60,659.61,659.63

1992

659.80,659.81,659.83
665.10,665.11

1992

665.10,665.11,665.12,665.14
Note: The title for the subcategory, 665.1 has been changed,
making the fifth-digit subclassification, 665.12 and 665.14 invalid.
670.0

1991

670
672.0

1991

672
677

1994

* No previous code assignments.
692.72-692.74

1992

692.79
692.82-692.83

1992

692.89
702.0-702.8

1991

702
702.11,702.19

1994

702.1
704.02

1993

704.09
709.00-709.01,709.09

1994

709.0
710.5

1992

288.3,729.1
733.10-733.16, 733.19

1993

733.1
738.10-738.19

1992

738.1
747.60-747.64, 747.69

1993

747.6
747.82

1993

747.89
753.10-753.17,753.19

1990

753.1
759.81-759.89

1989

759.8
759.83

1994

759.89
760.75

1991

760.79
760.76

1994

760.79
764.00-764.09

1988

764.0
764.10-764.19

1988

764.1
764.20-764.29

1988

764.2
764.90-764.99

1988

764.9
765.00-765.09

1988

765.0
765.10-765.19

1988

765.1
780.01-780.09

1992

780.0
780.03

1993

780.01
780.57

1992

780.51,780.53
781.8

1994

781.9
787.01-787.03

1994

787.0
788.20-788.21, 788.29

1993

788.2
788.30-788.39

1992

788.3
788.40-788.43

1993

788.4
788.61-788.62, 788.69

1993

788.6
789.00-789.07, 789.09

1994

789.0
789.30-789.37, 789.39

1994

789.3
789.40-789.47, 789.49

1994

789.4
789.60-789.67, 789.69

1994

789.6
790.91

1993

790.9
790.92

1993

286.9
790.93, 790.99

1993

790.9
795.71

1994

795.8 (delete code)
795.79

1994

795.7
795.8

1986

795.7
864.05

1992

864.09
864.15

1992

864.19
909.5

1994

909.9
925.1-925.2

1993

925
995.60-995.69

1993

995.0
996.04

1994

996.09
996.51-996.59

1987

996.5
996.60-996.69

1989

996.6
996.70-996.79

1989

996.7
996.80-996.89

1987

996.8
996.85

1990

999.8
998.81-998.82, 998.89

1994

998.8
V03.81-V03.82, V03.89

1994

V03.8
V05.3-V05.4

1993

V05.8
V06.5-V06.6

1994

V06.8
V07.31,V07.39

1994

V07.3
V07.4

1992

V07.8
V08

1994

044.9, 795.8 (delete code)
V09.0-V09.91

1993

* No previous code assignments
V12.00-V12.03, V12.09

1994

V12.0
V12.70-V12.72, V12.79

1994

V12.7
V13.00-V13.01, V13.09

1994

V13.0
V15.82

1994

305.13 (delete code)
V25.43

1992

V25.49
V25.5

1992

V25.8
V29.0-V29.8

1992

V71.8
V29.9

1992

V71.9
V30.00-V30.01

1989

V30.0
V31.00-V31.01

1989

V31.0
V32.00-V32.01

1989

V32.0
V33.00-V33.01

1989

V33.0
V34.00-V34.01

1989

V34.0
V35.00-V35.01

1989

V35.0
V36.00-V36.01

1989

V36.0
V37.00-V37.01

1989

V37.0
V39.00-V39.0l

1989

V39.0
V43.60-V43.66, V43.69

1994

V43.6
V45.00

1994

V45.89
V45.01

1994

V45.0
V45.02, V45.09

1994

V45.89
V45.51

1994

V45.5
V45.52, V45.59

1994

V45.89
V45.82

1994

V45.89
V49.60-V49.67

1994

V49.5
V49.70-V49.77

1994

V49.5
V50.41-V50.42, V50.49

1994

V50.8
V53.31

1994

V53.3
V53.32, V53.39

1994

V53.9
V57.21-V57.22

1994

V57.2
V58.41, V58.49

1994

V58.4
V58.81, V58.89

1994

V58.8
V65.40-V65.45, V65.49

1994

V65.4
V69.0-V69.3

1994

* No previous code assignments.
V69.8-V69.9

1994

* No previous code assignments.
V72.81-V72.85

1993

V72.8
V73.88-V73.89

1993

V73.8
V73.98-V73.99

1993

V73.9
E869.4

1994

E869.8

 

PROCEDURE CODES
Current code(s) assignment

Effective October 1

Previous code(s) assignment
02.96

1992

89.19
03.90

1987

03.99 (Insertion of Catheter)
11.75

1989

11.79
11.76

1989

11.62
20.96-20.98

1986

20.95
22.12

1988

22.11
26.12

1988

26.11
29.31

1991

83.02
29.32

1991

29.3
29.33

1991

29.3
29.39

1991

29.3
31.45

1988

31.43-31.44
31.95

1989

31.75
32.01

1989

32.0
32.09

1989

32.0
32.28

1989

32.29
33.27

1987

33.22 + 33.27
33.28

1987

33.27
33.29

1987

33.28-33.29
33.6

1990

33.5 + 37.5
34.05

1994

34.99
35.84

1988

35.82
35.96

1986

35.03
36.00-36.03

1986

36.0
36.04

1986

39.97
36.05

1987

36.01
36.05

1986

36.01 (Before October 1986 contents of current code 36.05 would have been assigned to 36.0), 36.02
36.09

1986

36.0
36.09

1991

36.00 (Code Deleted)
37.26-37.27

1988

37.29
37.34

1988

37.33
37.70 (Leads only)

1987 (Leads/Device)

37.70
37.71-37.72 (Leads only)

1987 (Leads/Device)

37.74
37.73 (Leads only)

1987 (Leads/Device)

37.73
37.74 (Leads only)

1987 (Leads/Device)

37.76
37.75 (Leads only)

1987 (Leads/Device)

37.89
37.76 (Leads only)

1987 (Leads/Device)

37.81
37.77 (Leads only)

1987 (Leads/Device)

37.83-37.84
37.78

1987

37.71-37.72
37.79

1987

86.09
37.80-37.87

1992

89.49 (Code deleted, this procedure is included in the code for pacemaker insertion/replacement)
37.80 (Device only)

1987 (Leads/Device)

37.73-37.77
37.81 (Device only)

1987 (Leads/Device)

37.73-37.77
37.82 (Device only)

1987 (Leads/Device)

37.73-37.77
37.83 (Device only)

1987 (Leads/Device)

37.73-37.77
37.85-37.87

1987

37.85
37.89

1987

37.86 + 37.89
37.94-37.98

1986

37.99
38.22

1986

38.29
38.44 (Abdominal Aorta only)

1986

38.44 (Entire Aorta)
38.45 (Thoracic Aorta only)

1986

38.44-38.45
38.95

1989

38.93
39.28

1991

39.29
39.65

1988

39.61
39.66

1990

39.65
41.00-41.03

1988

41.0
41.04

1994

99.79
42.25

1988

42.24
42.33

1989

42.32, 42.39
42.33

1990

42.91
43.11

1989

43.1
43.19

1989

43.1, 43.2
43.41

1989

43.41,43.49
44.21

1986

44.2
44.22

1986

44.99
44.29

1986

44.2
44.43

1989

43.49,45.32
44.44

1989

38.86
44.49

1989

43.0
44.93-44.94

1986

44.99
45.16

1988

45.14 (45.15 before 1987)
45.30

1989

45.31,45.32
45.42

1988

45.41
45.43

1989

45.49
45.75 (Hartmann Resection Added)

1988

48.66 (Code Deleted)
45.95

1987

45.93
46.13

1992

46.12 (Code Deleted)
46.32

1989

46.39
46.85

1989

46.99
49.31

1989

49.3
49.39

1989

49.3
51.10

1989

51.97
51.11

1989

51.11,51.97
51.14

1989

51.12
51.15

1989

51.97
51.22

1991

51.21 (Code Deleted),51.22
51.23

1991

51.22
51.64

1989

51.69
51.84-51.88

1989

51.97
51.97

1986

52.91,51.99, or 51.82
51.98

1986

51.99
52.13

1989

51.97,52.91
52.14

1989

52.11
52.21

1989

52.2
52.22

1989

52.2
52.93

1989

52.93 + 52.91
52.94

1989

52.09
52.97

1989

52.91
52.98

1989

52.91
52.99

1989

52.93,52.94,52.99
54.24

1987

54.23
54.25

1993

54.98
55.03-55.04

1986

55.02
56.33-56.34

1987

56.33
56.35

1987

45.12
57.17-57.18

1989

57.21
57.22

1989

57.22,57.82
58.31

1990

58.3
58.39

1990

58.3
58.93

1986

57.99
59.96

1986

59.95
60.95

1991

60.99
64.97

1986

64.95
66.01

1992

66.0
66.02

1992

66.73
68.15

1987

68.14
68.16

1987

68.13
68.9

1992

68.4
74.3

1992

69.11 (Code Deleted)
77.56

1989

77.89,78.49,81.18
77.57

1989

77.89,80.48,81.18,83.85
77.58

1989

77.59,81.18
78.10

1991

78.40
78.11

1991

78.41
78.12

1991

78.42
78.13

1991

78.43
78.14

1991

78.44
78.15

1991

78.45
78.16

1991

78.46
78.17

1991

78.47
78.18

1991

78.48
78.19

1991

78.49
78.20

1991

78.10,78.20,78.30
78.21

1991

78.11,78.31
78.22

1991

78.12,78.22,78.32
78.23

1991

78.13,78.23,78.33
78.24

1991

78.14,78.34
78.25

1991

78.15,78.25,78.35
78.27

1991

78.17,78.27,78.37
78.28

1991

78.18,78.38
78.29

1991

78.11,78.16,78.19,78.29,78.39
78.39

1991

78.31
78.90 2/

1987

78.40
78.91 2/

1987

78.41
78.92 2/

1987

78.42
78.93 2/

1987

78.43
78.94 2/

1987

78.44
78.95 2/

1987

78.45
78.96 2/

1987

78.46
78.97 2/

1987

78.47
78.98 2/

1987

78.48
78.99 2/

1987

78.49
80.50-80.59

1986

80.5
81.03

1989

81.02
81.04-81.05

1989

81.03,81.04,81.05
81.06-81.07

1989

81.06,81.07
81.08

1989

81.06,81.07,81.08
81.09

1989

81.08
81.40

1989

81.69
81.51

1989

81.51,81.59
81.52

1989

81.61,81.62,81.63,81.64
81.53

1989

81.51,81.59,81.61,81.62,
81.63,81.64
81.54-81.55

1989

81.41
81.56

1989

81.48
81.57

1989

81.31,81.39
81.59

1989

81.39
81.72

1989

81.79
81.73-81.74

1989

81.86
81.75

1989

81.87
81.79

1989

81.79,81.87
81.80

1989

81.81
81.97

1992

81.59
85.95

1987

85.99
85.96

1987

85.99
86.06

1987

86.09
86.07

1990

86.09
86.27

1986

86.22-86.23
86.28

1988

86.22
86.93

1987

86.89
88.90

1986

88.39
88.91

1986

89.15
88.92

1986

89.39
88.93

1986

89.15
88.94

1986

89.39
88.95

1986

89.29
88.97

1989

88.99
88.98

1989

88.90
88.99

1986

89.39
89.10

1989

89.15
89.17-89.18

1988

89.15
89.19

1989

89.15
89.50

1991

89.54
93.90

1988

93.92
94.61-94.69

1989

94.25
96.6

1986

96.35
96.70

1991

93.92 (Code Deleted)
96.71

1991

93.92 (Code Deleted)
96.72

1991

93.92 (Code Deleted)
97.05

1989

51.97
98.51-98.52

1989

59.96 (Code Deleted)
98.59

1989

59.96 (Code Deleted)
99.15

1986

99.29
99.28

1994

99.25
99.71-99.79 3/

1988

99.07
99.85

1987

93.35
99.86

1987

93.39
99.88

1988

99.83
1/ Before October 1986 contents of current code 36.05 would havebeen 
   assigned to 36.0.
2/ Codes 78.90-78.99 were retitled as "Insertion of bone growth stimulator" 
   in October 1987; the previous contents of codes 78.90-78.99 were 
   reassigned to codes 78.40-78.49.
3/ Codes 99.71-99.79 were deleted in October 1987; their contents were not 
   transferred elsewhere. In the October 1988 revision, codes 99.71-99.79 
   were reclassified as "Therapeutic apheresis."
APPENDIX C
   Civilian Population* by Sex, Age, Geographic Region and Race
                   United States, July 1, 1995
        [Population estimates consistent with Series P-25,
      Current Population Reports, U.S. Bureau of the Census]
Age, geographic
region and race

Both sexes

Male

Female

Population in thousands
All ages

261,407

127,134

134,273

Northeast

51,395

24,751

26,644

Midwest

61,698

30,003

31,695

South

91,143

44,018

47,125

West

57,170

28,361

28,809

White

217,041

106,062

110,979

Black

32,883

15,513

17,370

All other

11,483

5,559

5,924

Under 15 years

57,726

29,554

28,172

Under 1 year

3,848

1,970

1,878

1-4 years

15,743

8,055

7,688

5-14 years

38,134

19,529

18,606

Northeast

10,646

5,452

5,193

Midwest

13,491

6,910

6,581

South

20,027

10,243

9,784

West

13,562

6,948

6,614

White

45,728

23,463

22,264

Black

9,002

4,565

4,437

All other

2,996

1,526

1,470

15-44 years

117,976

58,700

59,276

15-24 years

35,431

17,909

17,522

25-34 years

40,349

19,972

20,377

35-44 years

42,195

20,819

21,377

Northeast

22,896

11,354

11,542

Midwest

27,770

13,835

13,935

South

40,999

20,177

20,823

West

26,311

13,335

12,976

White

96,442

48,412

48,030

Black

15,803

7,506

8,297

All other

5,731

2,782

2,949

45-64 years

52,173

25,192

26,981

45-54 years

31,043

15,149

15,894

55-64 years

21,130

10,043

11,087

Northeast

10,561

5,045

5,516

Midwest

12,344

5,985

6,359

South

18,434

8,837

9,597

West

10,834

5,325

5,509

White

44,817

21,874

22,943

Black

5,358

2,388

2,971

All other

1,998

930

1,068

65 years & over

33,532

13,689

19,844

65-74 years

18,759

8,342

10,417

75-84 years

11,145

4,330

6,815

85 years and over

3,628

1,017

2,611

Northeast

7,293

2,900

4,393

Midwest

8,094

3,273

4,821

South

11,683

4,762

6,921

West

6,462

2,753

3,709

White

30,055

12,313

17,742

Black

2,719

1,055

1,665

All other

758

321

437

*The NHDS used the civilian noninstitutional population to calculate hospital utilization rates from 1965 through 1980. 
Beginning in 1981, the civilian resident population has been used to calculate rates.  If you have purchased NHDS tapes
for years before 1981 and calculated rates using the civilian noninstitutionalized population provided in the
documentation, these rates will have to be adjusted to be comparable to 1995 rates using the civilian resident
population.
Civilian Population of the United States, July 1, 1995.  Estimates by Age, 
Sex, and Region.  Data are consistent with the estimates announced in Census 
Advisory CB94-43.  Methodology is described in Current Population Report 
Series P25-1106.  Release date 3/15/94

_____________________________________________________________________________

           United States           Northeast                Midwest            South               West
Age    Total   Male  Female  Total  Male   Female  Total  Male Female  Total Male  Female Total  Male   Female

_________________________________________________________________________________________________
                                Civilian Population in Thousands

ALL

261,407

127,134

134,273

51,395

24,751

26,644

61,698

30,003

31,695

91,143

44,018

47,125

57,170

28,361

28,809

0-4

19,591

10,025

9,566

3,617

1,852

1,765

4,393

2,248

2,145

6,782

3,469

3,314

4,799

2,456

2,342

5-9

19,220

9,843

9,377

3,613

1,853

1,760

4,498

2,305

2,193

6,631

3,390

3,240

4,479

2,295

2,184

10-14

18,915

9,685

9,229

3,416

1,747

1,668

4,601

2,358

2,243

6,614

3,384

3,230

4,285

2,197

2,088

15-19

17,974

9,189

8,785

3,229

1,645

1,583

4,417

2,257

2,160

6,383

3,248

3,134

3,945

2,038

1,908

20-24

17,458

8,720

8,738

3,259

1,627

1,632

4,146

2,070

2,076

6,244

3,066

3,178

3,809

1,957

1,851

25-29

18,721

9,282

9,439

3,733

1,849

1,884

4,267

2,110

2,157

6,457

3,156

3,301

4,264

2,167

2,097

30-34

21,629

10,690

10,938

4,317

2,131

2,186

4,960

2,452

2,508

7,445

3,637

3,808

4,906

2,470

2,436

35-39

22,064

10,906

11,158

4,392

2,167

2,225

5,208

2,588

2,621

7,548

3,685

3,863

4,915

2,466

2,449

40-44

20,132

9,913

10,219

3,967

1,934

2,032

4,771

2,358

2,413

6,922

3,384

3,538

4,472

2,237

2,236

45-49

17,419

8,532

8,887

3,492

1,688

1,804

4,081

2,002

2,079

6,068

2,961

3,108

3,778

1,882

1,896

50-54

13,624

6,617

7,008

2,766

1,328

1,439

3,201

1,557

1,644

4,801

2,318

2,484

2,855

1,414

1,441

55-59

11,084

5,316

5,767

2,239

1,065

1,174

2,655

1,279

1,376

3,949

1,877

2,072

2,241

1,096

1,145

60-64

10,046

4,727

5,320

2,064

965

1,099

2,407

1,147

1,260

3,616

1,681

1,934

1,960

933

1,027

65-69

9,928

4,506

5,422

2,125

951

1,173

2,343

1,072

1,271

3,533

1,594

1,939

1,928

889

1,039

70-74

8,831

3,836

4,995

1,905

811

1,094

2,075

902

1,172

3,109

1,343

1,766

1,742

780

962

75-79

6,681

2,720

3,961

1,466

577

888

1,625

651

974

2,302

937

1,365

1,289

555

734

80-84

4,464

1,609

2,854

984

344

640

1,108

392

716

1,530

548

982

842

326

516

85+

3,628

1,017

2,611

813

217

597

944

256

688

1,209

341

869

662

204

458

0-14

57,726

29,554

28,172

10,646

5,452

5,193

13,491

6,910

6,581

20,027

10,243

9,784

13,562

6,948

6,614

15-44

117,976

58,700

59,276

22,896

11,354

11,542

27,770

13,835

13,935

40,999

20,177

20,823

26,311

13,335

12,976

45-64

52,173

25,192

26,981

10,561

5,045

5,516

12,344

5,985

6,359

18,434

8,837

9,597

10,834

5,325

5,509

15+

203,681

97,581

106,101

40,750

19,299

21,450

48,207

23,093

25,114

71,117

33,776

37,341

43,608

21,413

22,195

45+

85,705

38,881

46,825

17,853

7,945

9,908

20,437

9,258

11,179

30,118

13,599

16,518

17,297

8,078

9,219

65+

33,532

13,689

19,844

7,293

2,900

4,393

8,094

3,273

4,821

11,683

4,762

6,921

6,462

2,753

3,709

75+

14,773

5,347

9,427

3,263

1,138

2,125

3,676

1,299

2,378

5,041

1,825

3,216

2,792

1,084

1,708

Civilian Population of the United States, July 1, 1995. Estimates by Age, Sex, 
and Race (Consistent with the 1990 Census, as enumerated.)
__________________________________________________________________________

                          All races                                White                            Black                               Other races
Age     Total      Male   Female    Total Male Female    Total     Male    Female Total       Male        Female

                                                                 Civilian population in thousands

All

261,407

127,134

134,273

217,041

106,062

110,979

32,883

15,513

17,370

11,483

5,559

5,924

0-4

19,591

10,025

9,566

15,451

7,924

7,527

3,100

1,570

1,530

1,040

531

509

0

3,848

1,970

1,878

3,015

1,547

1,467

621

314

307

212

108

104

1

3,840

1,964

1,876

3,028

1,552

1,475

608

307

301

205

105

100

2

3,882

1,990

1,892

3,067

1,575

1,492

611

311

300

204

104

100

3

3,965

2,026

1,939

3,137

1,606

1,531

619

313

305

209

107

103

4

4,056

2,075

1,981

3,205

1,643

1,562

642

325

317

209

107

103

5-9

19,220

9,843

9,377

15,237

7,818

7,418

3,025

1,535

1,491

958

490

468

5

4,039

2,069

1,970

3,198

1,642

1,557

641

325

316

201

103

98

6

3,888

1,991

1,897

3,071

1,575

1,496

625

318

307

192

98

94

7

3,810

1,949

1,861

3,016

1,547

1,470

602

304

298

191

98

93

8

3,616

1,851

1,765

2,876

1,475

1,401

561

285

276

180

92

88

9

3,867

1,983

1,883

3,075

1,580

1,495

597

303

293

195

99

95

10-14

18,915

9,685

9,229

15,040

7,721

7,319

2,877

1,460

1,417

998

505

493

10

3,869

1,985

1,884

3,084

1,586

1,499

588

299

289

197

100

97

11

3,705

1,897

1,808

2,952

1,516

1,436

559

283

276

194

98

95

12

3,778

1,932

1,846

2,998

1,537

1,460

576

292

284

204

103

102

13

3,811

1,949

1,863

3,030

1,553

1,477

580

294

286

202

102

100

14

3,751

1,922

1,829

2,976

1,529

1,447

574

292

283

201

102

99

15-19

17,974

9,189

8,785

14,290

7,328

6,962

2,806

1,418

1,387

878

443

435

15

3,790

1,944

1,846

2,994

1,540

1,454

602

306

296

194

98

96

16

3,627

1,866

1,761

2,877

1,483

1,393

570

291

279

180

91

89

17

3,596

1,852

1,744

2,864

1,479

1,385

556

284

273

176

89

86

18

3,482

1,775

1,708

2,779

1,421

1,358

544

273

271

160

80

79

19

3,479

1,753

1,726

2,777

1,405

1,372

533

264

269

168

84

85

20-24

17,458

8,720

8,738

13,982

7,027

6,955

2,562

1,239

1,322

914

453

461

20

3,477

1,746

1,731

2,786

1,406

1,381

523

257

265

168

83

84

21

3,327

1,666

1,661

2,652

1,334

1,318

501

245

256

174

87

88

22

3,314

1,654

1,660

2,645

1,330

1,316

491

237

254

178

88

90

23

3,493

1,742

1,752

2,797

1,404

1,392

509

244

265

187

93

95

24

3,846

1,911

1,935

3,101

1,553

1,548

538

256

282

207

103

105

25-29

18,721

9,282

9,439

15,186

7,603

7,583

2,536

1,193

1,343

999

486

513

25

3,810

1,894

1,916

3,090

1,549

1,541

514

243

270

207

102

104

26

3,689

1,828

1,861

3,002

1,501

1,501

487

230

257

200

97

103

27

3,663

1,818

1,846

2,967

1,488

1,479

498

234

264

198

96

102

28

3,543

1,752

1,791

2,889

1,443

1,445

472

221

251

182

87

95

29

4,015

1,991

2,025

3,238

1,622

1,616

565

265

299

213

104

109

30-34

21,629

10,690

10,938

17,803

8,898

8,905

2,776

1,285

1,491

1,050

508

542

30

4,161

2,056

2,105

3,397

1,697

1,700

556

258

298

207

100

107

31

4,220

2,085

2,136

3,464

1,730

1,734

547

254

293

210

101

109

32

4,310

2,130

2,181

3,547

1,771

1,776

549

254

295

214

104

110

33

4,380

2,159

2,221

3,628

1,809

1,819

550

253

297

202

97

105

34

4,557

2,261

2,296

3,766

1,890

1,876

574

265

308

217

105

112

35-39

22,064

10,906

11,158

18,319

9,156

9,163

2,749

1,275

1,474

996

476

520

35

4,551

2,255

2,296

3,764

1,885

1,879

576

268

308

211

102

110

36

4,391

2,167

2,224

3,650

1,823

1,828

544

251

294

197

94

103

37

4,451

2,198

2,253

3,699

1,847

1,852

552

255

296

200

96

104

38

4,185

2,064

2,121

3,490

1,740

1,750

513

237

275

182

87

96

39

4,485

2,222

2,263

3,716

1,861

1,855

564

263

301

205

97

108

40-44

20,132

9,913

10,219

16,863

8,400

8,462

2,375

1,096

1,279

894

417

478

40

4,318

2,133

2,186

3,595

1,796

1,799

528

245

284

195

92

103

41

4,110

2,021

2,090

3,440

1,711

1,729

486

224

262

184

86

98

42

3,987

1,961

2,026

3,351

1,666

1,684

459

211

248

178

83

95

43

3,870

1,897

1,973

3,246

1,611

1,635

449

206

244

175

80

94

44

3,846

1,902

1,944

3,231

1,616

1,615

452

210

242

163

76

87

45-49

17,419

8,532

8,887

14,833

7,347

7,486

1,852

844

1,008

734

342

393

45

3,732

1,836

1,896

3,137

1,562

1,575

432

199

233

163

75

88

46

3,550

1,739

1,811

3,012

1,493

1,519

387

176

211

151

70

82

47

3,580

1,749

1,830

3,039

1,502

1,536

387

175

211

154

72

83

48

3,653

1,787

1,866

3,187

1,575

1,612

334

151

183

132

61

70

49

2,904

1,421

1,484

2,458

1,215

1,243

312

142

170

134

64

70

50-54

13,624

6,617

7,008

11,720

5,750

5,971

1,381

619

761

523

248

276

50

2,888

1,407

1,481

2,465

1,214

1,251

302

136

166

121

57

64

51

2,781

1,352

1,429

2,393

1,175

1,218

280

126

154

108

51

57

52

2,913

1,417

1,496

2,536

1,245

1,291

274

123

151

103

48

54

53

2,567

1,243

1,324

2,205

1,079

1,126

267

119

148

95

45

50

54

2,476

1,197

1,278

2,121

1,037

1,084

258

115

143

97

46

51

55-59

11,084

5,316

5,767

9,540

4,625

4,915

1,138

500

638

406

192

214

55

2,312

1,113

1,199

1,967

956

1,011

254

114

141

91

43

48

56

2,315

1,112

1,203

1,996

970

1,026

236

103

134

83

40

43

57

2,291

1,099

1,192

1,969

954

1,015

239

105

133

83

39

44

58

2,029

970

1,058

1,763

852

911

195

85

110

71

33

38

59

2,137

1,023

1,115

1,845

893

952

214

94

120

78

37

42

60-64

10,046

4,727

5,320

8,723

4,152

4,571

988

425

563

334

149

185

60

2,111

997

1,114

1,832

875

958

206

89

118

72

33

39

61

1,934

918

1,016

1,678

806

873

189

82

107

67

30

37

62

1,939

912

1,027

1,672

796

876

199

86

113

68

30

38

63

1,968

926

1,042

1,717

818

899

188

81

108

62

27

35

64

2,095

975

1,120

1,823

858

965

205

88

117

66

29

37

65-69

9,928

4,506

5,422

8,726

3,993

4,733

920

393

527

282

119

162

65

2,067

959

1,108

1,799

844

954

205

87

118

63

27

36

66

2,010

923

1,087

1,761

814

947

192

84

107

58

24

33

67

2,041

930

1,110

1,796

827

968

189

80

109

56

23

32

68

1,913

856

1,056

1,691

762

929

169

72

97

52

22

30

69

1,897

837

1,060

1,679

745

934

165

70

96

52

22

30

70-74

8,831

3,836

4,995

7,918

3,462

4,456

697

280

416

216

94

122

70

1,884

829

1,055

1,677

743

934

157

64

93

49

21

28

71

1,822

797

1,025

1,634

720

914

143

57

86

45

20

25

72

1,762

769

993

1,578

693

885

138

56

82

46

20

26

73

1,712

736

976

1,543

667

875

130

52

78

39

17

22

74

1,652

705

947

1,487

638

848

129

51

78

37

16

21

75-79

6,681

2,720

3,961

6,039

2,470

3,569

510

194

316

132

56

77

75

1,512

635

877

1,358

573

785

122

49

73

32

14

19

76

1,405

583

821

1,272

530

741

105

42

63

28

11

16

77

1,312

532

780

1,189

485

704

97

37

61

25

11

15

78

1,264

504

760

1,146

460

686

94

34

60

24

10

14

79

1,189

466

723

1,074

422

652

91

34

58

23

10

13

80-84

4,464

1,609

2,854

4,069

1,469

2,600

318

107

211

76

33

44

80

1,076

409

668

981

374

607

76

26

50

19

8

11

81

976

361

616

890

330

560

70

24

46

16

7

9

82

895

321

574

815

293

522

65

22

43

15

6

9

83

801

280

521

734

256

478

54

18

35

13

6

8

84

715

239

476

649

216

433

54

17

37

12

5

7

85+

3,628

1,017

2,611

3,303

919

2,385

274

79

195

51

19

32

0-14

57,726

29,554

28,172

45,728

23,463

22,264

9,002

4,565

4,437

2,996

1,526

1,470

15-44

117,976

58,700

59,276

96,442

48,412

48,030

15,803

7,506

8,297

5,731

2,782

2,949

45-64

52,173

25,192

26,981

44,817

21,874

22,943

5,358

2,388

2,971

1,998

930

1,068

15+

203,681

97,581

106,101

171,314

82,599

88,715

23,881

10,949

12,932

8,487

4,033

4,454

45+

85,705

38,881

46,825

74,872

34,187

40,685

8,078

3,443

4,635

2,756

1,251

1,504

65+

33,532

13,689

19,844

30,055

12,313

17,742

2,719

1,055

1,665

758

321

437

75+

14,773

5,347

9,427

13,411

4,858

8,553

1,102

381

721

260

107

152


APPENDIX D
BASIC DATA FOR NEWBORN INFANTS, Non-Medical Variables

UNWEIGHTED N

WEIGHTED ESTIMATE

SURVEY YEAR
95

29,134

3,630,558

UNITS FOR AGE
1 = years

0

0

2 = months

0

0

3 = days

29,134

3,630,558

AGE
Under 15

29,134

3,630,558

15-44

0

0

45-64

0

0

65 and Up

0

0

SEX
1 = Male

14,945

1,872,083

2 = Female

14,189

1,758,475

RACE
1 = White

15,682

2,066,766

2 = Black

4,081

462,114

3 = AmInd/Eskimo

138

15,531

4 = Asian/PacIsland

900

114,603

5 = Other

1,411

104,815

9 = Race Not Stated

6,922

866,729

MARITAL STATUS
1 = Married

0

0

2 = Single

29,134

3,630,558

3 = Widowed

0

0

4 = Divorced

0

0

5 = Separated

0

0

6 = Unknown

0

0

9 = Not Stated

0

0

DISCHARGE STATUS
1 = Routine/Home

27,718

3,450,749

2 = Left Ag Medical Advice

10

2,628

3 = Short Term Facility

309

39,160

4 = Long Term Care

20

3,885

5 = Alive, Not Stated

748

75,461

6 = Dead

134

13,375

9 = Status Not Stated

195

45,300

LENGTH OF STAY FLAG
0 = Less than 1 day

732

87,268

1 = 1 day or more

28,402

3,543,290

UNWEIGHTED N

WEIGHTED ESTIMATE

REGION
1 = NorthEast

5,966

699,331

2 = MidWest

8,214

785,845

3 = South

8,816

1,321,036

4 = West

6,138

824,346

BEDSIZE GROUP
1 = 6-99

3,709

590,830

2 = 100-199

5,545

819,231

3 = 200-299

5,887

666,236

4 = 300-499

9,852

1,066,708

5 = 500 and Up

4,141

487,553

HOSPITAL OWNERSHIP GROUP
1 = Proprietary

1,581

367,628

2 = Government

2,663

451,140

3 = Nonprofit

24,890

2,811,790

EXPECTED SOURCE OF PAYMENT, PRINCIPAL
0 = No Charge

130

17,575

1 = Workers Comp

0

0

2 = Medicare

65

11,161

3 = Medicaid

8,706

1,111,193

4 = Other Govt Pymt

509

83,063

5 = Blue Cross

2,590

319,775

6 = Other Priv/Comm

12,849

1,556,370

7 = Self-Pay

1,817

243,392

8 = Other

2,023

177,490

9 = Pymt Not Stated

445

110,539

ADMISSION MONTH
01 = January

2,384

302,410

02 = February

2,283

291,560

03 = March

2,528

308,055

04 = April

2,415

291,404

05 = May

2,631

326,547

06 = June

2,576

317,385

07 = July

2,540

317,426

08 = August

2,609

314,860

09 = September

2,515

314,693

10 = October

2,305

300,309

11 = November

2,072

257,284

12 = December

2,276

288,625

BASIC DATA FOR NON-NEWBORNS, Non-Medical Variables

UNWEIGHTED N

WEIGHTED ESTIMATE

SURVEY YEAR
95

233,678

30,722,351

UNITS FOR AGE
1 = years

225,770

29,932,342

2 = months

5,507

547,679

3 = days

2,401

242,330

AGE
Under 15

24,058

2,405,422

15-44

81,165

10,593,181

45-64

45,975

6,167,656

65 and Up

82,480

11,556,092

SEX
1 = Male

93,566

12,197,504

2 = Female

140,112

18,524,847

RACE
1 = White

138,189

19,950,723

2 = Black

33,066

3,887,498

3 = AmInd/Eskimo

799

106,612

4 = Asian/PacIsland

3,866

485,662

5 = Other

8,771

505,345

9 = Race Not Stated

48,987

5,786,511

MARITAL STATUS
1 = Married

39,989

9,518,998

2 = Single

39,104

6,469,430

3 = Widowed

12,624

3,109,178

4 = Divorced

4,707

1,159,454

5 = Separated

985

189,839

6 = Unknown

23,154

2,358,780

9 = Not Stated

113,115

7,916,672

DISCHARGE STATUS
1 = Routine/Home

188,476

24,631,436

2 = Left Ag Medical Advice

2,233

272,755

3 = Short Term Facility

6,824

1,123,540

4 = Long Term Care

16,095

2,218,478

5 = Alive, Not Stated

11,756

1,246,924

6 = Dead

6,421

806,971

9 = Status Not Stated

1,873

422,247

LENGTH OF STAY FLAG
0 = Less than 1 day

5,801

1,000,419

1 = 1 day or more

227,877

29,721,932

UNWEIGHTED N

WEIGHTED ESTIMATE

REGION
1 = NorthEast

58,860

7,051,480

2 = MidWest

67,913

6,994,250

3 = South

73,824

11,373,398

4 = West

33,081

5,303,223

BEDSIZE GROUPING
1 = 6-99

28,235

6,220,329

2 = 100-199

43,340

7,229,037

3 = 200-299

49,459

5,794,252

4 = 300-499

81,352

8,030,262

5 = 500 and Up

31,292

3,448,471

HOSPITAL OWNERSHIP GROUP
1 = Proprietary

16,952

3,273,795

2 = Government

23,078

3,944,689

3 = Nonprofit

193,648

23,503,867

EXPECTED SOURCE OF PAYMENT, PRINCIPAL
0 = No Charge

818

108,023

1 = Workers Comp

1,913

233,701

2 = Medicare

82,681

11,606,616

3 = Medicaid

35,892

4,515,355

4 = Other Govt Pymt

3,309

534,814

5 = Blue Cross

17,091

2,140,320

6 = Other Priv/Comm

66,485

8,218,327

7 = Self-Pay

11,832

1,560,144

8 = Other

10,600

1,105,988

9 = Pymt Not Stated

3,057

699,063

ADMISSION MONTH
01 = January

21,251

2,784,479

02 = February

19,507

2,555,116

03 = March

21,450

2,817,980

04 = April

19,492

2,542,520

05 = May

20,616

2,674,741

06 = June

19,527

2,545,283

07 = July

19,409

2,550,184

08 = August

19,681

2,560,903

09 = September

18,516

2,402,520

10 = October

18,360

2,490,490

11 = November

17,660

2,384,749

12 = December

18,209

2,413,386

FIRST-LISTED DIAGNOSES FOR NEWBORN INFANTS, by ICD9-CM Chapter

UNWEIGHTED N

WEIGHTED ESTIMATE

VCODES

29,122

3,630,146

CHAPTER 1

0

0

CHAPTER 2

0

0

CHAPTER 3

0

0

CHAPTER 4

0

0

CHAPTER 5

-

-

CHAPTER 6

0

0

CHAPTER 7

0

0

CHAPTER 8

0

0

CHAPTER 9

0

0

CHAPTER 10

0

0

CHAPTER 11

0

0

CHAPTER 12

0

0

CHAPTER 13

0

0

CHAPTER 14

-

-

CHAPTER 15

-

-

CHAPTER 16

0

0

CHAPTER 17

0

0

FIRST-LISTED DIAGNOSES FOR NON-NEWBORNS, by ICD9-CM Chapter

UNWEIGHTED N

WEIGHTED ESTIMATE

VCODES

34,928

4,182,676

CHAPTER 1

7,278

884,623

CHAPTER 2

13,682

1,802,286

CHAPTER 3

9,528

1,278,420

CHAPTER 4

2,876

338,968

CHAPTER 5

15,357

2,008,508

CHAPTER 6

4,404

560,500

CHAPTER 7

43,074

5,830,490

CHAPTER 8

24,755

3,328,909

CHAPTER 9

21,640

3,030,509

CHAPTER 10

12,527

1,768,410

CHAPTER 11

4,366

542,075

CHAPTER 12

3,601

481,562

CHAPTER 13

10,815

1,479,216

CHAPTER 14

1,941

159,434

CHAPTER 15

1,439

141,918

CHAPTER 16

1,973

312,498

CHAPTER 17

19,494

2,591,349

WEIGHTED FREQUENCIES - ALL-LISTED DIAGNOSES, by ICD9-CM Chapter

NEWBORN INFANTS

NON-NEWBORNS

ALL

6,838,162

121,167,653

ECODES

20,398

2,912,978

VCODES

4,212,301

7,912,680

CHAPTER 1

30,059

3,472,655

CHAPTER 2

14,493

4,356,040

CHAPTER 3

19,645

11,960,017

CHAPTER 4

8,554

3,873,813

CHAPTER 5

1,590

7,278,786

CHAPTER 6

15,149

3,391,254

CHAPTER 7

24,290

25,389,890

CHAPTER 8

14,758

9,337,869

CHAPTER 9

24,673

8,228,037

CHAPTER 10

32,564

6,714,514

CHAPTER 11

0

7,857,920

CHAPTER 12

22,456

1,502,750

CHAPTER 13

11,816

4,374,212

CHAPTER 14

235,658

577,324

CHAPTER 15

2,091,179

389,183

CHAPTER 16

49,985

5,672,500

CHAPTER 17

8,594

5,965,231

WEIGHTED FREQUENCIES - ALL-LISTED PROCEDURES, by ICD9-CM Chapter

NEWBORN INFANTS

NON-NEWBORNS

ALL

2,365,553

39,807,237

CHAPTER 1

60,750

953,860

CHAPTER 2

0

84,781

CHAPTER 3

422

269,060

CHAPTER 4

1,007

68,058

CHAPTER 5

2,872

352,652

CHAPTER 6

12,836

1,041,151

CHAPTER 7

93,062

4,839,533

CHAPTER 8

645

362,545

CHAPTER 9

8,953

5,074,438

CHAPTER 10

4,599

1,101,877

CHAPTER 11

1,202,414

351,243

CHAPTER 12

0

2,092,846

CHAPTER 13

0

6,365,411

CHAPTER 14

1,237

3,076,911

CHAPTER 15

7,263

1,341,751

CHAPTER 16

969,493

12,431,120




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