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A main division in the ICD-9 manual. Printed in bold uppercase letters and is preceded by codes ranging from 001-999


A group or range of three-digit categories that represent a group of conditions or related conditions. Printed in bold uppercase letters and followed by inclusive code numbers surrounded by parentheses


Are the individual three-digit code that represents a single condition or disease; also referred to as a rubric


A four-digit code that provides a higher level of specificity, as compared to a three-digit code, can further define site, cause, or manifestation of the condition and must be used when available


A five-digit code that adds additional information and specificity to the description and must be used when available.


A numerical listing of disease and injury


An alphabetic listing of diseases and injury followed by ICD-9 codes


A list of numeric surgical and diagnostic procedural codes, to be used in hospital type coding only


Serves as a billing service model for the provider's office and a recorded source of the service(s) rendered to the patient---aka charge slip


Supplementary Classification of factors influencing health status


Supplementary Classification of external cause of injury and poisoning


Morphology of Neoplasms


Classification of Drugs by AHFS list


Classification of Industrial Accidents


List of three-digit categories

Main Terms

Are in bold type print -in the Alphabetic Index to Diseases identifying the patient's condition, (major term in the diagnostic statement) which may or may not be followed by an ICD-9 code number, nonessential modifiers, or followed by Instructional Notes.


Also known as essential modifiers are ALWAYS indented two spaces to the right under the main term qualifying the main term by identifying different organs or atnatomic sites, etiology or clinical status.

ICD-9 code

Each medical term or diagnosis is followed by an ____________

Boxed Notes

Refer to information within a `box' under the main term, sometimes used to inform, describe circumstances or give additional information about a term or diagnosis to the coder. often used to list the fifth-digit sub-classifications for certain categories

Secondary Subterms

Also known as Essential Secondary Modifier indented (four spaces to the right) from the main term and it is indented two spaces to the right from the subterm

Non-essential modifiers

A term, or a series of terms, in parentheses following the main term, clarifying the main term by giving the coder other supplementary terms or words

Instructional Notations

Are cross-referenced or printed instructions in italics to follow when coding (ex See, See also, See Category).

Hypertension Table

Found in alphabetic order in the "H" listings helping the coder find the appropriate code among the many codes of these two diagnoses.

Neoplasm Table

Found in alphabetic order of the "N" listings helping the coder find the appropriate code among the many codes of these two diagnoses.

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