ICD-10 Code for Bowleg
Also indexed as (s) (acquired)
The ICD-10-CM code for bowleg is M21.16 — Varus deformity, not elsewhere classified, knee. This is the code the Alphabetic Index gives for bowleg with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
M21.16 cannot be submitted on a claim. It is a header code, so a more specific code from the list below is required.
Which bowleg code should you use?
The Alphabetic Index lists 3 codes under Bowleg. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
Codes under M21.16
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources