icd9cm_list {medicalrisk}

List of ICD-9-CM diagnostic and procedural codes

Description

ICD-9-CM codes have the periods removed. Diagnostic codes are prefixed with 'D' while procedure codes are prefixed with 'P'. So, diagnostic code 404.03 appears as "D40403".

Usage

icd9cm_list

Format

A string vector

Details

Obsolete codes not active in 2012 are not present, and may cause this dataset to miss certain classifications when applied to older datasets. For example, codes 043 and 044 (both obsolete AIDS codes) are not included.

References

1. https://www.cms.gov/Medicare/Coding/ICD9ProviderDiagnosticCodes/codes.html

Examples

# Count procedural codes
length(icd9cm_list[grep('^P',icd9cm_list)])