| H70 | Mastoiditis and related conditions |
| H70.0 | Acute mastoiditis |
| H70.00 | Acute mastoiditis without complications |
| H70.001 | Acute mastoiditis without complications, right ear |
| H70.002 | Acute mastoiditis without complications, left ear |
| H70.003 | Acute mastoiditis without complications, bilateral |
| H70.009 | Acute mastoiditis without complications, unspecified ear |
| H70.01 | Subperiosteal abscess of mastoid |
| H70.011 | Subperiosteal abscess of mastoid, right ear |
| H70.012 | Subperiosteal abscess of mastoid, left ear |
| H70.013 | Subperiosteal abscess of mastoid, bilateral |
| H70.019 | Subperiosteal abscess of mastoid, unspecified ear |
| H70.09 | Acute mastoiditis with other complications |
| H70.091 | Acute mastoiditis with other complications, right ear |
| H70.092 | Acute mastoiditis with other complications, left ear |
| H70.093 | Acute mastoiditis with other complications, bilateral |
| H70.099 | Acute mastoiditis with other complications, unspecified ear |
| H70.1 | Chronic mastoiditis |
| H70.10 | Chronic mastoiditis, unspecified ear |
| H70.11 | Chronic mastoiditis, right ear |
| H70.12 | Chronic mastoiditis, left ear |
| H70.13 | Chronic mastoiditis, bilateral |
| H70.2 | Petrositis |
| H70.20 | Unspecified petrositis |
| H70.201 | Unspecified petrositis, right ear |
| H70.202 | Unspecified petrositis, left ear |
| H70.203 | Unspecified petrositis, bilateral |
| H70.209 | Unspecified petrositis, unspecified ear |
| H70.21 | Acute petrositis |
| H70.211 | Acute petrositis, right ear |
| H70.212 | Acute petrositis, left ear |
| H70.213 | Acute petrositis, bilateral |
| H70.219 | Acute petrositis, unspecified ear |
| H70.22 | Chronic petrositis |
| H70.221 | Chronic petrositis, right ear |
| H70.222 | Chronic petrositis, left ear |
| H70.223 | Chronic petrositis, bilateral |
| H70.229 | Chronic petrositis, unspecified ear |
| H70.8 | Other mastoiditis and related conditions |
| H70.81 | Postauricular fistula |
| H70.811 | Postauricular fistula, right ear |
| H70.812 | Postauricular fistula, left ear |
| H70.813 | Postauricular fistula, bilateral |
| H70.819 | Postauricular fistula, unspecified ear |
| H70.89 | Other mastoiditis and related conditions |
| H70.891 | Other mastoiditis and related conditions, right ear |
| H70.892 | Other mastoiditis and related conditions, left ear |
| H70.893 | Other mastoiditis and related conditions, bilateral |
| H70.899 | Other mastoiditis and related conditions, unspecified ear |
| H70.9 | Unspecified mastoiditis |
| H70.90 | Unspecified mastoiditis, unspecified ear |
| H70.91 | Unspecified mastoiditis, right ear |
| H70.92 | Unspecified mastoiditis, left ear |
| H70.93 | Unspecified mastoiditis, bilateral |
| H71 | Cholesteatoma of middle ear |
| H71.0 | Cholesteatoma of attic |
| H71.00 | Cholesteatoma of attic, unspecified ear |
| H71.01 | Cholesteatoma of attic, right ear |
| H71.02 | Cholesteatoma of attic, left ear |
| H71.03 | Cholesteatoma of attic, bilateral |
| H71.1 | Cholesteatoma of tympanum |
| H71.10 | Cholesteatoma of tympanum, unspecified ear |
| H71.11 | Cholesteatoma of tympanum, right ear |
| H71.12 | Cholesteatoma of tympanum, left ear |
| H71.13 | Cholesteatoma of tympanum, bilateral |
| 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 |
| H71.3 | Diffuse cholesteatosis |
| H71.30 | Diffuse cholesteatosis, unspecified ear |
| H71.31 | Diffuse cholesteatosis, right ear |
| H71.32 | Diffuse cholesteatosis, left ear |
| H71.33 | Diffuse cholesteatosis, bilateral |
| H71.9 | Unspecified cholesteatoma |
| H71.90 | Unspecified cholesteatoma, unspecified ear |
| H71.91 | Unspecified cholesteatoma, right ear |
| H71.92 | Unspecified cholesteatoma, left ear |
| H71.93 | Unspecified cholesteatoma, bilateral |
| H72 | Perforation of tympanic membrane |
| H72.0 | Central perforation of tympanic membrane |
| H72.00 | Central perforation of tympanic membrane, unspecified ear |
| H72.01 | Central perforation of tympanic membrane, right ear |
| H72.02 | Central perforation of tympanic membrane, left ear |
| H72.03 | Central perforation of tympanic membrane, bilateral |
| H72.1 | Attic perforation of tympanic membrane |
| H72.10 | Attic perforation of tympanic membrane, unspecified ear |
| H72.11 | Attic perforation of tympanic membrane, right ear |
| H72.12 | Attic perforation of tympanic membrane, left ear |
| H72.13 | Attic perforation of tympanic membrane, bilateral |
| H72.2 | Other marginal perforations of tympanic membrane |
| H72.8 | Other perforations of tympanic membrane |
| H72.81 | Multiple perforations of tympanic membrane |
| H72.811 | Multiple perforations of tympanic membrane, right ear |
| H72.812 | Multiple perforations of tympanic membrane, left ear |
| H72.813 | Multiple perforations of tympanic membrane, bilateral |
| H72.819 | Multiple perforations of tympanic membrane, unspecified ear |
| H72.82 | Total perforations of tympanic membrane |
| H72.821 | Total perforations of tympanic membrane, right ear |
| H72.822 | Total perforations of tympanic membrane, left ear |
| H72.823 | Total perforations of tympanic membrane, bilateral |
| H72.829 | Total perforations of tympanic membrane, unspecified ear |
| H72.9 | Unspecified perforation of tympanic membrane |
| H72.90 | Unspecified perforation of tympanic membrane, unspecified ear |
| H72.91 | Unspecified perforation of tympanic membrane, right ear |
| H72.92 | Unspecified perforation of tympanic membrane, left ear |
| H72.93 | Unspecified perforation of tympanic membrane, bilateral |
| H73 | Other disorders of tympanic membrane |
| H73.0 | Acute myringitis |
| H73.00 | Unspecified acute myringitis |
| H73.001 | Acute myringitis, right ear |
| H73.002 | Acute myringitis, left ear |
| H73.003 | Acute myringitis, bilateral |
| H73.009 | Acute myringitis, unspecified ear |
| H73.01 | Bullous myringitis |
| H73.011 | Bullous myringitis, right ear |
| H73.012 | Bullous myringitis, left ear |
| H73.013 | Bullous myringitis, bilateral |
| H73.019 | Bullous myringitis, unspecified ear |
| H73.09 | Other acute myringitis |
| H73.091 | Other acute myringitis, right ear |
| H73.092 | Other acute myringitis, left ear |
| H73.093 | Other acute myringitis, bilateral |
| H73.099 | Other acute myringitis, unspecified ear |
| H73.1 | Chronic myringitis |
| H73.10 | Chronic myringitis, unspecified ear |
| H73.11 | Chronic myringitis, right ear |
| H73.12 | Chronic myringitis, left ear |
| H73.13 | Chronic myringitis, bilateral |
| H73.2 | Unspecified myringitis |
| H73.20 | Unspecified myringitis, unspecified ear |
| H73.21 | Unspecified myringitis, right ear |
| H73.22 | Unspecified myringitis, left ear |
| H73.23 | Unspecified myringitis, bilateral |
| H73.8 | Other specified disorders of tympanic membrane |
| H73.81 | Atrophic flaccid tympanic membrane |
| H73.811 | Atrophic flaccid tympanic membrane, right ear |
| H73.812 | Atrophic flaccid tympanic membrane, left ear |
| H73.813 | Atrophic flaccid tympanic membrane, bilateral |
| H73.819 | Atrophic flaccid tympanic membrane, unspecified ear |
| H73.82 | Atrophic nonflaccid tympanic membrane |
| H73.821 | Atrophic nonflaccid tympanic membrane, right ear |
| H73.822 | Atrophic nonflaccid tympanic membrane, left ear |
| H73.823 | Atrophic nonflaccid tympanic membrane, bilateral |
| H73.829 | Atrophic nonflaccid tympanic membrane, unspecified ear |
| H73.89 | Other specified disorders of tympanic membrane |
| H73.891 | Other specified disorders of tympanic membrane, right ear |
| H73.892 | Other specified disorders of tympanic membrane, left ear |
| H73.893 | Other specified disorders of tympanic membrane, bilateral |
| H73.899 | Other specified disorders of tympanic membrane, unspecified ear |
| H73.9 | Unspecified disorder of tympanic membrane |
| H73.90 | Unspecified disorder of tympanic membrane, unspecified ear |
| H73.91 | Unspecified disorder of tympanic membrane, right ear |
| H73.92 | Unspecified disorder of tympanic membrane, left ear |
| H73.93 | Unspecified disorder of tympanic membrane, bilateral |
| H74 | Other disorders of middle ear mastoid |
| H74.0 | Tympanosclerosis |
| H74.01 | Tympanosclerosis, right ear |
| H74.02 | Tympanosclerosis, left ear |
| H74.03 | Tympanosclerosis, bilateral |
| H74.09 | Tympanosclerosis, unspecified ear |
| H74.1 | Adhesive middle ear disease |
| H74.11 | Adhesive right middle ear disease |
| H74.12 | Adhesive left middle ear disease |
| H74.13 | Adhesive middle ear disease, bilateral |
| H74.19 | Adhesive middle ear disease, unspecified ear |
| H74.2 | Discontinuity and dislocation of ear ossicles |
| H74.20 | Discontinuity and dislocation of ear ossicles, unspecified ear |
| H74.21 | Discontinuity and dislocation of right ear ossicles |
| H74.22 | Discontinuity and dislocation of left ear ossicles |
| H74.23 | Discontinuity and dislocation of ear ossicles, bilateral |
| H74.3 | Other acquired abnormalities of ear ossicles |
| H74.31 | Ankylosis of ear ossicles |
| H74.311 | Ankylosis of ear ossicles, right ear |
| H74.312 | Ankylosis of ear ossicles, left ear |
| H74.313 | Ankylosis of ear ossicles, bilateral |
| H74.319 | Ankylosis of ear ossicles, unspecified ear |
| H74.32 | Partial loss of ear ossicles |
| H74.321 | Partial loss of ear ossicles, right ear |
| H74.322 | Partial loss of ear ossicles, left ear |
| H74.323 | Partial loss of ear ossicles, bilateral |
| H74.329 | Partial loss of ear ossicles, unspecified ear |
| H74.39 | Other acquired abnormalities of ear ossicles |
| H74.391 | Other acquired abnormalities of right ear ossicles |
| H74.392 | Other acquired abnormalities of left ear ossicles |
| H74.393 | Other acquired abnormalities of ear ossicles, bilateral |
| H74.399 | Other acquired abnormalities of ear ossicles, unspecified ear |
| H74.4 | Polyp of middle ear |
| H74.40 | Polyp of middle ear, unspecified ear |
| H74.41 | Polyp of right middle ear |
| H74.42 | Polyp of left middle ear |
| H74.43 | Polyp of middle ear, bilateral |
| H74.8 | Other specified disorders of middle ear and mastoid |
| H74.9 | Unspecified disorder of middle ear and mastoid |
| H74.90 | Unspecified disorder of middle ear and mastoid, unspecified ear |
| H74.91 | Unspecified disorder of right middle ear and mastoid |
| H74.92 | Unspecified disorder of left middle ear and mastoid |
| H74.93 | Unspecified disorder of middle ear and mastoid, bilateral |
| H75 | Other disorders of middle ear and mastoid in diseases classified elsewhere |
| H75.0 | Mastoiditis in infectious and parasitic diseases classified elsewhere |
| H75.00 | Mastoiditis in infectious and parasitic diseases classified elsewhere, unspecified ear |
| H75.01 | Mastoiditis in infectious and parasitic diseases classified elsewhere, right ear |
| H75.02 | Mastoiditis in infectious and parasitic diseases classified elsewhere, left ear |
| H75.03 | Mastoiditis in infectious and parasitic diseases classified elsewhere, bilateral |
| H75.8 | Other specified disorders of middle ear and mastoid in diseases classified elsewhere |
| H75.80 | Other specified disorders of middle ear and mastoid in diseases classified elsewhere, unspecified ear |
| H75.81 | Other specified disorders of right middle ear and mastoid in diseases classified elsewhere |
| H75.82 | Other specified disorders of left middle ear and mastoid in diseases classified elsewhere |
| H75.83 | Other specified disorders of middle ear and mastoid in diseases classified elsewhere, bilateral |