Skip to main content

Table 2 Category Examples for ICD-9-CM Codes based on Transitions to ICD-10-CM Codes

From: Transition to international classification of disease version 10, clinical modification: the impact on internal medicine and internal medicine subspecialties

Category

ICD9 Code

ICD10 Code(s)

Description

Information Loss

413.0 Angina Decubitus

I20.8 Other forms of angina pectoris

ICD-10-CM code loses the designation of decubitus which clinically provides context for the type of angina (while supine)

Overlapping Categories

272.4 Other and unspecified hyperlipidemia

E78.5 Hyperlipidemia, unspecified

E78.4 Other hyperlipidemia

The ICD-9-CM maps to two ICD-10-CM codes, it is not apparent to the practicing physician the difference between these two ICD-10-CM codes

Inconsistent

719.49 Pain in join involving multiple sites

M25.50 Pain in unspecified joint

719.49 is designated as as multiple joints but M25.50 is designated as a single joint