1. H71 Cholesteatoma of middle ear

    1. H71.0 Cholesteatoma of attic

      1. H71.00 Cholesteatoma of attic, unspecified ear

      2. H71.01 Cholesteatoma of attic, right ear

      3. H71.02 Cholesteatoma of attic, left ear

      4. H71.03 Cholesteatoma of attic, bilateral

    2. H71.1 Cholesteatoma of tympanum

      1. H71.10 Cholesteatoma of tympanum, unspecified ear

      2. H71.11 Cholesteatoma of tympanum, right ear

      3. H71.12 Cholesteatoma of tympanum, left ear

      4. H71.13 Cholesteatoma of tympanum, bilateral

    3. H71.2 Cholesteatoma of mastoid

      1. H71.20 Cholesteatoma of mastoid, unspecified ear

      2. H71.21 Cholesteatoma of mastoid, right ear

      3. H71.22 Cholesteatoma of mastoid, left ear

      4. H71.23 Cholesteatoma of mastoid, bilateral

    4. H71.3 Diffuse cholesteatosis

      1. H71.30 Diffuse cholesteatosis, unspecified ear

      2. H71.31 Diffuse cholesteatosis, right ear

      3. H71.32 Diffuse cholesteatosis, left ear

      4. H71.33 Diffuse cholesteatosis, bilateral

    5. H71.9 Unspecified cholesteatoma

      1. H71.90 Unspecified cholesteatoma, unspecified ear

      2. H71.91 Unspecified cholesteatoma, right ear

      3. H71.92 Unspecified cholesteatoma, left ear

      4. H71.93 Unspecified cholesteatoma, bilateral

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.