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ICD-10-CM 2027

ICD-10 code for bunionette

M21.62

Bunionette

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Bunionette”. Page updated September 29, 2026.

About coding bunionette

The ICD-10-CM code for bunionette is M21.62 (Bunionette).

Within M21.6 (other acquired deformities of foot), M21.62 is specifically for bunionette. Related codes cover Bunion (M21.61) and other acquired deformities of foot (M21.6X).

To report this condition, pick the subcode that matches the documentation: M21.621 (of right foot), M21.622 (of left foot) and M21.629 (of unspecified foot).

It was added in FY2017, effective October 1, 2016.

Common questions about bunionette ICD-10 codes

What is the ICD-10 code for bunionette?

M21.62 — Bunionette (a header code; report a more specific subcode).

Is M21.62 billable?

No. M21.62 is a header code. Report one of its more specific subcodes instead.