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ICD-10-CM 2027

ICD-10 code for mastoid cholesteatoma

H71.2

Cholesteatoma of mastoid

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Cholesteatoma (ear) (middle) (with reaction) › mastoid”. Page updated September 29, 2026.

About coding mastoid cholesteatoma

The ICD-10-CM code for mastoid cholesteatoma is H71.2 (Cholesteatoma of mastoid).

Within H71 (cholesteatoma of middle ear), H71.2 is specifically for cholesteatoma of mastoid. Related codes cover cholesteatoma of attic (H71.0), cholesteatoma of tympanum (H71.1), diffuse cholesteatosis (H71.3) and unspecified cholesteatoma (H71.9).

To report this condition, pick the subcode that matches the documentation: H71.20 (unspecified ear), H71.21 (right ear), H71.22 (left ear) and H71.23 (bilateral).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Common questions about mastoid cholesteatoma ICD-10 codes

What is the ICD-10 code for mastoid cholesteatoma?

H71.2 — Cholesteatoma of mastoid (a header code; report a more specific subcode).

Is H71.2 billable?

No. H71.2 is a header code. Report one of its more specific subcodes instead.