ICD-10-CM > H60-H95 > H65-H75 > H71 H71 Cholesteatoma of middle ear Non-Billable/Non-Specific Type 2 Excludes cholesteatoma of external ear (H60.4-)recurrent cholesteatoma of postmastoidectomy cavity (H95.0-) Codes H71.0Cholesteatoma of atticH71.00Cholesteatoma of attic, unspecified earH71.01Cholesteatoma of attic, right earH71.02Cholesteatoma of attic, left earH71.03Cholesteatoma of attic, bilateralH71.1Cholesteatoma of tympanumH71.10Cholesteatoma of tympanum, unspecified earH71.11Cholesteatoma of tympanum, right earH71.12Cholesteatoma of tympanum, left earH71.13Cholesteatoma of tympanum, bilateralH71.2Cholesteatoma of mastoidH71.20Cholesteatoma of mastoid, unspecified earH71.21Cholesteatoma of mastoid, right earH71.22Cholesteatoma of mastoid, left earH71.23Cholesteatoma of mastoid, bilateralH71.3Diffuse cholesteatosisH71.30Diffuse cholesteatosis, unspecified earH71.31Diffuse cholesteatosis, right earH71.32Diffuse cholesteatosis, left earH71.33Diffuse cholesteatosis, bilateralH71.9Unspecified cholesteatomaH71.90Unspecified cholesteatoma, unspecified earH71.91Unspecified cholesteatoma, right earH71.92Unspecified cholesteatoma, left earH71.93Unspecified cholesteatoma, bilateral