H71 - Cholesteatoma of middle ear
H71.2 - Cholesteatoma of mastoid
H71.20 - Cholesteatoma of mastoid, unspecified ear
H71.21 - Cholesteatoma of mastoid, right ear
H71.22 - Cholesteatoma of mastoid, left ear
H71.23 - Cholesteatoma of mastoid, bilateral