Scientific Data Documentation
International Classification Of Diseases - 9, Abbreviated Titles
DSN: CC37.CODES.ICD9ABB
TECHNICAL SPECIFICATIONS
Each file is an IBM type tape with:
1) EBCDIC limited character set (no lower case alphabetic characters).
2) 9 channel, 1600 BPl, odd parity.
3) Logical record size is 84 bytes (fixed length) (divisible by 6).
4) Ten records per physical block, 840 bytes per block.
5) Label records are omitted.
6) No tape mark before first data record, two tape marks after last
data record.
7) The last block will not be padded, but will be a short block, if ten
records are not present.
8) A new 2400 foot tape reel is used.
***Cataloged DSN - CC36.ICD9ABB
ICD-9-CM ADJUNCT MATERIALS
CODES AND TITLES FILES, MAGNETIC TAPE FILE ChARACTERISTICS
Overview of Records
Four magnetic tape files contain ICD-9-CM codes and their titles:
ICD-9-CM codes and full titles.
ICD-9-CM codes and abbreviated titles.
Sex-specific ICD-9-CM codes and full titles.
Sex-specific ICD-9-CM codes and abbreviated titles.
The user of ICD-9-CM Codes and Titles Magnetic Tape Files should review the
materials provided with each individual file. The materials include
instructions for use and magnetic tape file documentation.
The files have many similarities including a standard record layout except
as noted below:
The files for sex-specific codes, with either full or abbreviated titles,
contain a character for sex identification.
The abbreviated title record has a six-digit line number preceding "Section."
Consecutive Fields Comments
------------------ --------
Section Used to identify Volume I (Diseases, content = D)
and Volume 3 (Procedures, content = alpha 0.).
Code Prefix Used to identify External Causes codes of the
Disease Section. This prefix is used to allow
code alignment on implied decimal point
throughout all files.
NOTE: When an "E," indicating External Cause, is
present in this field, the fifth-digit of the
code will always be space.
Example:
Code Digits
Prefix 1 2 3 4 5
------ -----------
E 8 0 0 1
+ =implied decimal point
The example translates to
E8OO.1 in printed form.
Code All Disease codes are left-justified, with
trailing spaces in three- and four-digit codes.
Zeroes are not added to make all codes five
digits. Procedure codes contain a space in the
first digit position, to allow alignment on
implied decimal point. Trailing spaces are used
for two- and three-digit procedure codes.
A Disease code may contain 0-9, or V in the first
digit.
Any code may contain 0-9 in the second and third
digits.
A decimal point is implied between the third and
fourth digits of the code field. den printing
the code field, a decimal point should print only
if the fourth and fifth digits are not space.
The fourth and fifth digits may contain 0-9, or
space.
Subdivided Code "At" sign (@) is present following the code field
Indicator if the code has been subdivided and should not be
used for classifying Diseases or Procedures. The
symbol designates an incomplete code.
Record Sequence The maximum length for a title on one line is 68
within Code characters, but a Full Title may contain more
than 68 characters, requiring multiple records to
provide the entire title. This sequence field is
present to link multiple records for a code.
Record sequence numbers could be 1-9 according to
field specifications. The maximum number of
lines present for a title is actually four.
Record sequence contains "I" for the Abbreviated
Titles file of ICD-9-CM codes.
In the Sex-Specific Abbreviated Titles file, this
character contains sex identification; F for
Female, M for Male.
Category or This field allows selection of different code
Code Type types. As an example, all three-digit disease
codes may be selected by interrogating the
Section field for "D" and this code type field
for "I."
Major Category I = 3-digit Disease Code, or
2-digit Procedure Code
preceded by space.
Intermediate 2 = 4-digit Disease Code, or
Category 3-digit Procedure Code
preceded by space.
Minor Category 3 = 5-digit Disease Code, or
4-digit Procedure Code
preceded by space.
NOTE: The "E" prefix is not counted in the number
of digits making EXXX a major category.
Filler for all Titles Files except Sex-Specific Full Titles Files, where the
field contains "F" for Female and "M" for Male.
Title for ICD-9-CM A maximum of 24 characters is provided for
Abbreviated Titles. A maximum of 68 characters
in each of 1-9 records is provided for a code
with a full title.
If the first character of a title contains an
asterisk (*), the code and title are illogical,
resulting from the combination of additional
digits in ICD-9-CM notes with category code
ranges. These illogical codes should be avoided
in classification.
The following field is present only in the ICD-9-CM Procedure codes with
Abbreviated Titles file:
Class (operated or 1-4
nonoperated)
Only one class can be associated with one code with the exception of
procedure code 64.0 (Circumcision). The age of the patient must be
checked to determine the class. If the patient is less than 28 days of
age, 64.0 is a class 4 procedure. If the patient is older than 27 days,
64.0 is a class 1 procedure. On file, 64.0 is shown with a class of "4,1".
DEFINITIONS OF CLASS
A. All significant procedures are to be reported in an ICD-9-CM
classification code. A significant procedure is one which carries an
operative or anesthetic risk or requires highly trained personnel or
requires special facilities or equipment.
For certain significant procedures, the identity (by unique number
within the hospital) of the person performing the procedure and/or the
date (or day of hospitalization) must be reported.
C. When more than one procedure is reported, the principal procedure is to
be designated. In determining which of several procedures is the
principal, the following criteria apply:
1. The principal procedure is one which was performed for definitive
treatment rather than one performed for diagnostic or exploratory
purposes, or was necessary to take care of a complication.
2. The principal procedure is that procedure most related to the
principal diagnosis.
D. For UHDDS purposes, in order to assure 1) uniform reporting of
significant procedures and 2) completeness of reporting (the inclusion
of person performing procedure and/or the date) procedural
classifications in the U.S. clinical modification of ICD-9 have been
grouped into four classes:
Class I: Requires ICD-9-CM procedure code, date, and identity of person
performing procedure. This class contains all ICD-9-CM
surgical procedures.
Class 2: Requires ICD-9-CM procedure code and date.
Class 3: Requires only ICD-9-CM procedure code.
Class 4: Optional, reporting not required.
In general, Class 1 constitutes the "surgery" group. Classes 2 and 3
collectively correspond to "other significant" procedures as previously
defined. All procedures in the first three classes are, by definition,
significant in that they carry an operative or anesthetic risk or
require highly trained personnel or special facilities or equipment, and
are, therefore, to be reported. Procedures in Class 4 do not meet these
criteria and, therefore, reporting is optional.
Note: The above information was taken from the publication UHDDS Classes of
Procedures, ICD-9-CM, which is available from CPHA.
ACCEPTABLE EBCDIC CHARACTERS FOR INPUT
Printer EBCDIC IBM UNIVAC Printer EBCDIC IBM UNIVAC
Graphic Punch HEX OCTAL Graphic Punch HEX 0ctal
------- ----- --- ----- ------- ----- --- -----
@ 4-8 7C 00 ) 11-5-8 SO 40
12-2-8 4A Ol - 11 60 41
" 7-8 7F 02 + 12-6-8 4E 42
# 3-8 7B 03 < 12-4-8 4C 43
- 11-7-8 SF 04 = 6-8 7E 44
Space Blank 40 05 > 0-6-8 6E 45
A 12-1 Cl 06 & 12 50 46
B 12-2 C2 07 $ 11-3-8 5B 47
C 12-3 C3 10 * 11-4-8 SC 50
D 12-4 C4 11 ( 12-5-8 4D 51
E 12-5 C5 12 % 0-4-8 6C 52
F 12-6 C6 13 : 2-8 7A 53
G 12-7 C7 14 ? 0-7-8 6F 54
H 12-8 C8 15 ! 11-2-8 5A 55
I 12-9 C9 16 , 0-3-8 6B 56
J 11-1 D1 17 | 12-7-8 4F 57
K 11-2 D2 20 0 0 F0 60
L 11-3 D3 21 1 1 Fl 61
M 11-4 D4 22 2 2 F2 62
N 11-5 D5 23 3 3 F3 63
O 11-6 D6 24 4 4 F4 64
P 11-7 D7 25 5 5 FS 65
Q 11-8 D8 26 6 6 F6 66
R 11-9 D9 27 7 7 F7 67
S 0-2 E2 30 8 8 F8 70
T 0-3 E3 31 9 9 F9 71
U 0-4 E4 32 ' 5-8 7D 72
V 0-5 ES 33 ; 11-6-8 5E 73
W 0-6 E6 34 / 0-1 61 74
X 0-7 E7 35 . 12-3-8 4B 75
y 0-8 E8 36 _ 0-5-8 6D 76
Z 0-9 E9 37 None 0-2-8 EO 77
Notes: Codes are listed in univac collating sequence.
HEX 00 (12-0-9-8-1) is not acceptable.
FULL TITLES
Examples (b=space)
Sec- Code Digits Subdv., Rcd. Code Fil-
tion Prefix 1 2 3 4 5 Ind. Seq. Type ler Title
D b 6 7 2 b b b 1 1 b PYREXIA OF UNKNOWN
ORIGIN DURING THE
PUERPERIUM
D b 6 7 3 0 b @ 1 2 b 0BSTETRICAL AIR EMB0LISM
D b 6 7 3 0 1 b 1 3 b OBSTETRICAL AIR EMBOLISM
WITH OR WITHOUT
+1st rcd+
D b 6 7 3 0 1 b 2 3 b MENTION OF ANTEPARTUM
CONDITION +2nd rcd+
D b v 6 8 8 1 b 1 3 b REFERRAL OF PATIENT
WITHOUT EXAMINATION OR
TREATMENT
D E 8 0 1 b b @ 1 1 b RAILWAY ACCIDENT
INVOLVING COLLISION
WITH OTHER OB
D E 8 0 1 1 b b 1 2 b RAILWAY ACCIDENT
INVOLVING COLLISION
WITH OTHER OB
+1st rcd+
D E 8 0 1 1 b b 2 2 b AND INJURING PASSENGER
ON RAILWAY +2nd rcd+
0 b b 0 1 b b @ 1 1 b INCISION AND EXCISI0N OF
SKULL, BRAIN, AND
CEREBRAL +1st rcd+
0 b b 0 1 b b @ 2 1 b MENINGES +2nd rcd+
0 b b 0 1 0 0 @ 1 2 b CRANIAL PUNCTURE
0 b b 0 1 0 1 b 1 3 b CISTERNAL PUNCTURE
+-implied decimal point
In the selected Sex-Specific Full Titles file, the filler field contains "F"
for codes pertinent to female, or "M" for codes pertinent to Male.
CPHA
Commission on Professional and Hospital Activities
1968 Green Road Ann Arbor, Michigan 48105
DOCUMENTATION FORMS
File Description Documentation Form
November 29, 1979
FILE DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Data Set Name (if labeled tape): N/A
Brief description of data on file: File identifier record precedes code
and abbreviated title records for
diseases and procedures
Source of data: ICD-9-CM Volumes
Computer and operating system utilized: H6O6O, GC0S, Release 3J
Character code (FIELDATA or EBCDIC*:
*See attachment for acceptable EBCDIC Characters.
Language utilized: COBOL 74
Internal Volume Serial Number (if labeled tape): N/A
Sort sequence key field(s): Section,Code Prefix,Code
V codes will be out of sequence in EBCDIC col1ating seq. V
codes follow
Ascending or descending? 999 codes and precede External
Cause codes
Logical Record Length (in bytes): 84 bytes
Blocksize: 840 bytes (Last Block Unpadded)
Record Name: File Identifier, Code and Abbreviated
Title
Exact number of records: 1 File Identifier, 18559 data records
File Control Totals and derivative fields (as specified by the Project
Officer): 14473 - Diseases
4086 - Procedures
Other remarks: 9 channel, odd parity, 1600 BPJ, no tape marks before first
record, 2 tape marks after last record, 2400 ft. reel
Name of Agency/Contractor supplying tape: CPHA
Record Description Documentation Forms (by Record Name)
File Identifier Record
September 8, 1978
RECORD DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: File Identifier
Field Starting Total No. of Alphal
Sequence Position No. of Decimal Numeric Signed?
Number Data Element Name Number Bytes Bytes (A or N) (Y or N)
------------------------ ------ ----- ----- -------- --------
1 REC-1D-CEAR 001 1 AN
2 FILLER 002 10 A
3 FILE-NAME 012 68 AN
4 FILLER 080 5 A
Code and Abbreviated Title Record
September 8, 1978
RECORD DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Starting Total No. of Alphal
Sequence Position No. of Decimal Numeric Signed?
Number Data Element Name Number Bytes Bytes (A or N) (Y or N)
------------------------ ------ ----- ----- -------- --------
1 LN-N0 001 6 N N
2 SECTION 007 1 A
3 PREFIX 008 1 A
4 CODE 009 5 AN
5 SUB-DV 014 1 AN
6 RECORD-SEC 015 1 N N
7 CATEGORY 016 1 N N
8 FILLER 017 1 A
9 ABV-TITLE 018 24 AN
10 FILLER 042 1 A
11 GROUP 043 3 AN
12 FILLER 046 1 A
13 CLASS 047 3 A
14 FILLER 050 30 A
15 ERRATA 080 1 AN
16 FILLER 081 4 A
Data Element Description Documentations Forms (by Record Name)
File Identification Record (by Data Element)
Data Element: Record Identification Character
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: File Identifier
Field Sequence#: 1 (From Record Description form)
Data Element Label Name: REC-ID-CHAR
Data Element description: Record Identification Character
Source:
Initialized value: A
Value for missing data: Blanks
Has data been edited? Yes How? Manually
Allowable range of values: A
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character Field
hero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
A File Identifier Record
Data Element: File Name
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: File Identifier
Field Sequence#: 3 (From Record Description form)
Data Element Label Name: FILE-NAME
Data Element description: File Name
Source:
Initialized value: ABBREVIATED TITLES WITH ALL CODES
Value for missing data: Blanks
Has data been edited? Yes How? Manually
Allowable range of values: Alpha - numeric
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? Left
Zero-filled or blank-filled? Blank-filled
Possible values for codes, and equated meaning: N/A
Code and Abbreviated Title Record (by Data Element)
Data Element: Line Number
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 1 (From Record Description form)
Data Element Label Name: LN-NO
Data Element description: Line Number
Source: Computer Generated
Initialized value: 000002-999999
Value for missing data: None
Has data been edited? Yes How? Manually
Allowable range of values: 000002 through 999999
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): Number of Lines
Justified left or right in field? Right
Zero-filled or blank-filled? Zero-filled
Possible values for codes, and equated meaning: N/A
Data Element: Tabular List Section ID
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 2 (From Record Description form)
Data Element Label Name: SECTION
Data Element description: Tabular List Section ID
Source: ICD-9-CM Volumes
Initialized value: "D" or alpha "0" selected
from Titles file
Value for missing data: None
Has data been edited? Yes How? Manually and by computer
program IX08XX
Allowable range of values: "D", "0" (Alpha)
Validity checks: For allowable range of
values
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character field
Zero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
D Disease Record
0 (alpha) Procedure Record
Data Element: Code Prefix Indicating External Cause Code
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 3 (From Record Description form)
Data Element Label Name: PREFIX
Data Element Description: Code prefix indicating external
cause code
Source: ICD-9-CbJ Volumes
Initialized value: Blank
Value for missing data: None
has data been edited? Yes How? Manually and by computer
program IXO8XX
Allowable range of values: "E", "b"
Validity checks: For allowable range of
values
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character field
Zero-filled or blank-f illed? N/A
Possible values for codes, and equated meaning:
Data Element: ICD-9-CM Code
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 4 (From Record Description form)
Data Element Label Name: CODE
Data Element description: ICD-9-CM Code
Source: ICD-9-CM Volumes
Initialized value:
Value for missing data: None
Has data been edited? Yes How? Manually and by computer
program IXO8XX
Allowable range of values: Col. 9 = V, O-9,b
Col. 1O,11 = 0-9
Col. 12,13 =O-9,b
Validity checks: Checks for correct section and against CATEGORY for
correct amount of digits
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? Aligned on implied decimal point
Zero-filled or blank-filled? Left blank filled, for procedure
code only and right blank filled
for 2 digit procedure or 3
digit disease code
Possible values for codes, and equated meaning: N/A
NOTE: Implied decimal point between 3rd and 4th digits of a 4 or 5
digit code.
Data Element: Subdivided Code Indicator
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 5 (From Record Description form)
Data Element Label Name: SUB-DV
Data Element description: Subdivided code indicator
Source: ICD-9-CM Volumes
Initialized value: Blank
Value for missing data: None
has data been edited? Yes How? Manually and by computer
program IXO8XX for allow-
able range of values
Allowable range of values: "@", "b"
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character field
Zero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
@ Code is subdivided
Blank Not subdivided
Data Element: Record Sequence Within Code
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 6 (From Record Description form)
Data Element Label Name: RECORD-SEQ
Data Element description: Record Sequence Within Code
Source: ICD-9-CM Volumes
Initialized value:
Value for missing data: None
has data been edited? Yes How? Manually and by computer
program IXO8XX
Allowable range of values: 1
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character field
Zero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
1 One record per code
Data Element: Type of Code
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 7 (From Record Description form)
Data Element Label Name: CATEGORY
Data Element description: Type of Code
Source: ICD-9-CM Volumes
Initialized value: 1,2 or 3 as selected from
Titles file
Value for missing data: None
Has data been edited? Yes How? Manually and by computer
program IXO8XX
Allowable range of values: 1 through 3
Validity checks: Compared to actual digits
present in Code
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - One character field
Zero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
1 3 digit disease code and 2 digit procedure code
2 4 digit disease code and 3 digit procedure code
3 5 digit disease code and 4 digit procedure code
Data Element: Abbreviated Title
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence 9 (From Record Description form)
Data Element Label Name: ABV-TITLE
Data Element description: Abbreviated Title
Source: ICD-9-CM Volumes
Initialized value:
Value for missing data: Blanks
has data been editedi Yes How? Manually and by computer
Title is checked for length of 24 characters or less.
Allowable range of values: Alpha - numeric
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? Left
Zero-filled or blank-filled? Blank-filled
Possible values for codes, and equated meaning: N/A
Data Element: List A or List B Group Code
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 11 (From Record Description form)
Data Element Label Name: GROUP
Data Element description: List A or List B Group Code
Source: ICD-9-CM Volumes
Initialized value: N/A
Value for missing data: Blanks
has data been edited? Yes How? Manually and by computer
program IXO8XX
Allowable range of values: 001-398, 501-742
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? Right
Zero-filled or blank-filled? Zero-filled
Possible values for codes, and equated meaning:
Data Element: Procedure Class (OPOR NON-OP)
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 13 (From Record Description form)
Data Element Label Name: CLASS
Data Element description: Procedure Class (OPOR NON-OP)
Source: ICD-9-CM Volumes
Initialized value: N/A
Value for missing data: Blanks
has data been edited? Yes How? Manually and by computer
program lXO8XX
Allowable range of values: 1 bb, 2 bb, 3 bb, 4 bb
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? Left
Zero-filled or blank-filled? Blank-filled
Possible values for codes, and equated meaning:
Code Meaning
---- -------
1 bb Requires procedure code, date,
identity of person performing
operation
2 bb Requires procedure code, date
3 bb Requires procedure code, date
4 bb Optional
Data Element: Errata Character for Changes to ICD-9-CM Volumes
September 8, 1978
DATA ELEMENT DESCRIPTION DOCUMENTATION FORM
File Name: Abbreviated Codes and Titles
Record Name: Code and Abbreviated Title
Field Sequence#: 11 (From Record Description form)
Data Element Label Name: ERRATA
Data Element description: Errata character for changes to
ICD-9-CM Volumes
Source:
Initialized value: Blank
Value for missing data: None
has data been edited? Yes How? Manually
Allowable range of values: "b", "&", ">", "@"
Validity checks: Manual
Ratio checks: N/A
Units of Measure (dollars, persons, codes, etc.): N/A
Justified left or right in field? N/A - one character field
Zero-filled or blank-filled? N/A
Possible values for codes, and equated meaning:
Code Meaning
---- -------
& Code added since book volumes
were published
> Change to volume
@ Deletion from volume
Start Position, Content & Other Information on Data Elements
1/ A = Alpha N = Numeric C = Computational Cl = Compl C2 = Comp2
AN = Alphanumeric PD or C3 = Packed decimal B = Binary 0 = Octal
2/ = Computer generated field
3/ EC = Each character
Start Lgth 1/ Standard Not Valid
Posi- In Field Data Descrip- Re- Con-
tion Char. Type Name tion corded tents\3
----- ----- ---- -------- ----------- ------ ---------------------
001 06 N Ln-No Line Number None 000001
007 01 A Rcd-ID-Char Identifier None A (to sort be-
as to rec. fore sections)
008 10 A Filler (not used) Space (to sort before
codes)
018 62 AN File-Name File Name None Left Justified
080 05 A Filler (not used) Space
001 6 N LN-N0 Line Number None 000002-999999
007 1 A SECTION Tabular Lst None D if Disease or O(alpha)
Section ID if Procedure
008 1 A PREFIX Code Prefix Space E for external cause
otherwise space
009 5 AN CODE ICD-9-CM None Char 1=0-9, V if disease
Code or space if procedure
NOTE:There is an implied decimal Char 2=0-9, Char 3=0-9,
point between the 3rd & 4th char.--> Char 4=0-9, space
of 4 & 5 digit codes Char 5=0-9, space
014 1 AN SUBDIVIDED Subdivided Space "@" (at sign) if sbdvd
Code Ind. code otherwise space
015 1 N RECORD SEQ Record Seq- None 1 for all abbreviated
uence w/in titles
code
016 1 N CATEGORY Type of Code None 1 for 3 digit dis. code
or 2 digit proc. code
2 for 4 digit dis. code
or 3 digit proc. code
3 for 5 digit dis. code
or 4 digit proc. code
017 1 A Sex-Sp-Ind Future Use Space F=female, M=male
Sex Specif
Indicator
018 24 AN ABR-TITLE Abbreviated None EC= Alphanumeric, 1st
Title Character=* if illogic
title from note comb.
042 1 A FILLER Not Used Space
043 3 N GROUP(FTR) ICD-9-CM Space 001-398, 450-460(ext
List A or B cause) for A
Group 501-742 for B
(Future Use)
046 1 A FILLER Not Used Space
047 3 A CLASS Procedure Space "1bb","2bb","3bb","4bb"
Class(Op or or Space if disease
Nonop)
050 30 A FILLER Not Used Space
080 1 AN ERRATA Errata Char Space Alphanumeric- & = add
for flagging > = change, - = delete
changes in
future
O81 4 A FILLER Not Used
ICD-9-CM USAGE INFORMATION
Introduction to Revised Materials
December 1979
ICD-9-CM CODES WITH ABBREVIATED TITLES
Introduction to Revised Materials
The International Classification of Diseases, 9th Revision (ICD-9) as
published by the World Health Organization (WHO) will be used by member
nations to collect and report mortality and morbidity statistics. The
Department of Health, Education and Welfare (DHFW) is responsible for the
support and use of ICD in the United States.
While the Ninth Revision of ICD is acceptable for mortality use, it has been
determined by DHEW that ICD-9 is not sufficiently detailed for the morbidity
requirements of the health care systems in the United States. The
Commission on Professional and Hospital Activities through its affiliated
division, the Council on Clinical Classification (CCC)*, has prepared a
clinical modification of ICD-9, the International Classification of
Diseases, 9th Revision, Clinical Modification (ICD-9-CM). PHEW has
determined that ICD-9-CM is satisfactory for use in the United States and
intends to encourage its use in hospitals and clinical settings; and, where
applicable and consistent with the law, to require its use by DHEW financed
activities in order to encourage the use of a single statistical
classification in the United States that is completely compatible with the
WHO version (ICD-9). ICD-9-CM was put into use in the United States during
1979.
Through December 1978, two disease classifications were in use in the United
States, the International Classification of Diseases, 8th Revision, Adapted
for use in the United States (ICDA-8) published in 1968 by the Public Health
Service (PHS publication 1693) and the Hospital Adaptation of I6DA, Second
Edition, (H-ICDA-2), published in 1973 by the Commission on Professional and
Hospital Activities. Both ICDA-8 and H-ICDA-2 are based on the
International Classification of Diseases, 8th Revision, (ICD-8), published
by WHO in 1968, but they are not entirely compatible with each other.
Publication and use of ICD-9-CM will solve the problem of separate and
different disease classifications in the United States.
*The Council on Clinical Classifications was formed as an affiliated
division of CPHA in February 1976. Its sponsors are: the American
Academy of Pediatrics, the American College of Obstetricians and
Gynecologists, the American College of Physicians, the American College of
Surgeons, the American Psychiatric Association, and the Commission on
Professional and Hospital Activities. These medical specialty societies had
served in an advisory capacity to CPHA since 1971, and formation of
the Council served to strengthen and formalize that relationship. More
importantly, formation of the Council provided a mechanism for broad and
systematic clinical input to the classification. Each CCC sponsoring
organization appointed a Task Force on Classification to work with the CCC
staff in developing ICD-9-CM and the materials necessary for its
implementations.
Recognizing that a new classification requires adjunct materials for its
successful implementation, the Health Care Financing Administration(HCFA)
of the Department of Health, Education, and Welfare entered into a contract
with the Commission on Professional and Hospital activities to produce
certain of these adjunct materials.
This contract (HCFA 500-78-0016) covers the development cost of each adjunct
item defined below and permits their distribution for the minimal cost of
reproduction and handling. Each item of adjunct material will be available
in printed form and on magnetic tape and will be accompanied by instructions
for use and a full set of documentation for the magnetic tape version.
The original materials were created during September through December of
1978. Actual application and additional testing during 1979 detected errors
which, when validated, were issued as errata by CPHA and corrected in
this version of the Adjunct Materials.
Adjunct Materials
The following adjunct materials are designed for use with ICD-9-CM:
1. ICD-9-CM codes and titles
Health data systems and others with computer installations need
listing of the codes and titles in ICD-9-CM. These are in two forms:
a. Codes and full titles for the Tabular Lists: Volume 1,
Diseases, and for Volume 3, Procedures.
b. Codes and abbreviated titles (maximum of 24 alphabetic character
descriptions) for both diagnoses and procedures.
Both of these lists may be used to title computer generated data
displays and to translate coded information into English. The
abbreviated titles are necessary for reports that permit only a
single (short) line description.
2. Editing Aids
In order to allow for and encourage uniform editing of diagnoses and
procedure codes and to help standardize data quality control
procedures, the following editing aids were produced:
a. List of sex-specific diagnosis codes
b. List of sex-specific procedure codes
c. List of diagnosis codes not to be used in classification*
d. List of procedure codes not to be used in classification*
The list of sex-specific codes permit the editing of data to prevent
the accumulation of such illogical data as male patients with
obstetric diagnoses or female patients with prostatectomies.
The list of codes not to be used for classification for both
diagnoses and procedures consist of:
a. those codes that do not appear in ICD-9-CM
b. two, three and four digit codes that are further subdivided
c. codes that have illogical titles caused by the addition of
inapplicable fourth or fifth-digits.
An example of the third class would be placenta previa, post-partum
complication.
The above provides a complete list of codes not to be used for
classification. Editing can be done to assure that any code on
these lists is not used since it would be an error.
Those using a "negative" manner of validating codes should be
prepared to compare against ten times the number of codes present in
a codes and titles file.
3. Groupings
Groupings of diagnosis and procedure codes for statistical
tabulations of short-term hospital inpatients permit statistical
comparisons of data gathered under ICDA-8 and H-1CDA-2 statistics to
be expressed in terms of ICD-9-CM.
4. Diagnosis Conversion Tables
Publication of a new disease classification creates a demand to
translate data from the new classification back to its
predecessors. This is necessary to ensure historical linkage with
existing data bases and to permit analysis of aggregated data over a
time span that would encompass the use of different
classifications. These conversion tables will ensure, to the extent
possible, that the same kinds of patients are being included in the
tabulations so that increases or decreases in rates and other
measures reflect true trends and not merely changes in
classification.
There are four conversion tables:
a. ICD-9-CM to ICD-9
b. ICD-9-CM to H-ICDA-2
c. ICD-9-CM to ICDA-8
d. ICD-9-CM to H-ICPA-2 and ICDA-8
*Formerly known as nonexistent codes.
It should be noted that the conversion tables must be designed to
convert 1CD-9-6M to its predecessors since ICD-9-6M has the greater
specificity. Conversions from the more general to the more specific
are not possible.
The adjunct materials are not copyrighted and may be freely
reproduced and used. Each item of adjunct material is available in
hard copy printed form and on magnetic tape.
ICD-9-CM Codes With Abbreviated Titles
Instructions for Use
The ICD-9-CM codes with abbreviated titles reproduce the information
contained in the published Tabular Lists of ICD-9-CM, Volume 1, Diseases,
and Volume 3, Procedures.
Health data systems and others with computer installations will find the
magnetic tape of this information useful for computer generated data
displays, in which a single (short line) description can be accommodated to
translate the coded information into English. For example, use of the
magnetic tape of codes and abbreviated titles will permit the entry of a
code (e.g., 800.00) into the computer that will generate the code and
abbreviated title, 800.0 Closed skull vault fx.
The individual abbreviated titles contained in this volume represent unique
identifiers with respect to full nomenclature expressions contained in
ICD-9-CM, both diseases and procedures. Abbreviated titles are comprised of
up to 24 alphabetic characters in the form of shortened words. It is not
the purpose of this volume to utilize the present abbreviated words that are
uniquely or unambiguously defined, but rather to construct abbreviated
titles that clearly represent full nomenclature expressions.
A particular shortened word may refer to more than one full nomenclature
word:
e.g., gen = general or genital
def = defect, deficiency, or deformity
Conversely, one nomenclature word may be referred to by similar shortened
words containing a variable number of characters:
e.g., extract, extrac, or extr = extraction
lac, lacerat, or lacer = laceration
Thus, individual words should be interpreted in the context of the
titles in which they appear.
The list of ICD-9-CM codes with abbreviated titles is in two parts:
1. Diseases
2. Procedures.
Structure of Disease Codes
Disease codes in ICD-9-CM may be three, four, or five digits in length. The
basic structure is three digits, but some are further subdivided by the
addition of fourth-digits and many of these contain even greater specificity
by use of fifth digit subclassifications. The structure of each type of
code is as follows:
XXX (three digit code)
XXX.X (four digit code)
XXX.XX (five digit code)
Each example above represents a valid code length. All disease codes are
left justified with trailing spaces for three and four digit codes. Neither
fillers nor zeros are added to make all ICD-9-CM disease codes a uniform
length of five digits.
Structure of Procedure Codes
Procedure codes in ICD-9-CM may be three or four digits in length. The
basic structure is two digits that are subdivided by the addition of either
one or two digits. The structure is as follows:
XX.X (three digit procedure code)
XX.XX (four digit procedure code)
The code length in both the above examples is valid. Three digit codes are
left justified with a trailing space. Neither fillers nor zeros are added
to three digit codes to make all ICD-9-CM procedure codes a uniform length
of four digits.
Abbreviated Title Descriptions
Each ICD-9-CM code carries a stand alone description in the form of an
abbreviated title. In some cases, this means combining part of the title
from the three digit code with the title from the four digit code to make it
complete. For example, the following titles appear in ICD-9-CM:
580 Acute glomerulonephritis
580.0 With lesion of proliferative glomerulonephritis
580.4 With lesion of rapidly progressive glomerulonephritis
These abbreviated titles are a maximum of 24 characters and print on one
line.
In the listing of ICD-9-CM codes with abbreviated titles, the above titles
appear as follows:
580.0 Ac proliferat nephritis
580.4 Ac rapidly progr nephrit
Use of Footnotes
Two footnote references are used in the list of ICD-9-CM codes with
abbreviated titles:
code is further subdivided
code is inapplicable
The symbol @ preceding the disease or procedure code indicates the code is
further subdivided and as it stands is invalid. This symbol appears with
three digit disease codes that have fourth-digit subdivisions and with four
digit disease codes that have fifth digit subclassifications. It also
appears with two digit procedure codes and with three digit procedure codes
that are further subdivided. For example:
Disease Codes
@580 Acute nephritis
580.0 Ac proliferat nephritis
580.4 Ac rapidly progr nephrit
Code 580 should not be used since more specific code assignments are given.
Similarly:
@580.8 AC nephritis w oth les
580.81 AC nephritis in other dis
580.89 Acute nephritis NEC
580.8 is not a valid code because more specific information is available by
using the applicable fifth-digit subclassification.
Procedure Codes
@06 Thyroid/parathyroid ops
@06.0 Thyroid field incision
06.01 Thyroid field aspiration
06.02 Reopen thyroid field wnd
06.09 Incis thyroid field NEC
The footnote "code is further subdivided" appears on each page where the
symbol @ is used.
The symbol immediately preceding the title of the code in the lists
denotes an illogical title. These are the result of sets of fifth digits
that apply to a series of categories and are most prevalent in the
obstetrics chapter, Chapter ll, "Complications of Pregnancy, Childbirth, and
the Puerperium" (ICD-9-CM codes 630-676), and in Chapter l3, "Disorders of
the Musculoskeletal System and Connective Tissue" (ICD-9-CM codes 710-739).
For example, the following fifth-digits are used in Chapter Il to denote the
episode of care:
0 unspecified as to episode of care
1 delivered, with or without mention of antepartum condition
2 delivered, with mention of postpartum complication
3 antepartum condition or complication
4 postpartum condition or complication
Many conditions may occur at any point of gestation: antepartum,
intrapartum, or postpartum, but some do not. For example, placenta previa
can only occur antepartum. Therefore, the fifth-digits of 2 or 4
(delivered, with mention of postpartum complication and postpartum
complication) would not apply to that category; the symbol preceding the
title indicates this fact. Using category 641 as an example:
@641.1 Hemorr from placent prev
641.10 Placenta prev hem-unspec
641.11 Placenta prev hem-deliv
641.12 *Plac prev hem-deI wp/p
641.13 Placen prev hem-antepart
641.14 *Placenta previa hem-p/p
Note that the asterisk precedes the titles for 641.12 and 641.14 since
placenta previa is an antepartum or intrapartum condition and cannot occur
postpartum. Codes 641.12 and 641.14 are not logical as indicated by the
symbol *. A footnote will appear on each page where the symbol is used to
indicate "* code is inapplicable."
Procedure Code Classes
The magnetic tape of ICD-9-CM codes with abbreviated titles also contains
procedure classes as defined by the Uniform Hospital Discharge Data Set.*
The class numbers appear to the right of the title as follows:
01.15 Skull biopsy 1
The UHDDS reporting requirements for ICD-9-CM procedure codes are as follows:
Class 1 -Requires ICD-9-CM procedure code, date, and identity of person
performing procedure.
Class 2 - Requires ICD-9-CM procedure code and date.
Class 3 - Requires only ICD-9-CM procedure code.
Class 4 - Optional, reporting not required.
Errata Characters
The original list of ICD-9-CM codes with abbreviated titles contained errata
characters indicating changes since ICD-9-CM volumes were printed. Since
the current list reflects any changes caused by published errata for
ICD-9-CM volumes and Adjunct Materials, no errata characters are present.
The errata character location is now reserved for use should any additional
changes be required.
UHDD5 Glasses of Procedures, ICD-9-CM, published by the Commission on
Professional and Hospital Activities, Ann Arbor, Michigan, 1978.
Adjunct Materials and Codes
Counts of All ICD-9-CM Codes
Further
Section Valid Subdivided Illogical Total
------- ----- ---------- --------- -----
Disease
3 digit codes 155 1,024 0 1,179
4 digit codes 5,628 1,221 19 6,868
5 digit codes 6,045 0 381 6,426
Total 11,828 2,245 400 14,473
Procedure
2 digit codes 0 98 0 98
3 digit codes 259 599 0 858
4 digit codes 3,112 0 18 3,130
Total 3,371 697 18 4,086
Both Sections 15,199 2,942 418 18,559
Counts of Sex-Specific Codes
Further
Section/Sex Valid Subdivided Illogical Total
----------- ----- ---------- --------- -----
Disease
Female 1,308 345 301 1,954
Male 121 17 0 138
1,429 362 301 2,092
Procedure
Female 257 62 0 319
Male 109 26 0 135
366 B8 0 454
Both Sections
Female 1,565 407 301 2,273
Male 230 43 0 273
1,795 450 301 2,546
Diagnosis Conversion Table Counts
ICD-9-CM codes = 11,828
Conversion to: ICD-9-CM codes Forced Codes not resulting
that don't convert Conversions from conversion
------------------ ----------- ---------------
ICD-9 0 0 0
ICDA-8 397 1609 673
H-ICDA-2 283 1853 879
ICD-9-CM Adjunct Materials
December 1979
Counts of Disease Codes by Chapter
CHAPTER TOTAL COPES FURTHER SUBDIVIDED ILLOGICAL VALID
------- ----------- ------------------ --------- -----
1 1343 204 0 1139
2 878 110 0 768
3 299 54 0 245
4 83 12 0 71
5 570 104 0 466
6 1409 243 0 1166
7 376 77 0 299
8 218 40 0 178
9 482 104 0 378
10 370 58 0 312
Il 1606 308 301 997
12 172 29 0 143
13 1020 128 35 857
14 438 67 0 371
15 185 21 0 164
16 224 29 0 195
17 2895 423 45 2427
SUBTOTAL 12568 2011 381 10176
V 697 96 0 601
SUBT0TAL 13265 2107 381 10777
E 1208 138 19 1051
TOTAL 14473 2245 400 11828
