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 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

 * Excludes2: mastoiditis (H70.-)
 * 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
 * Adhesive otitis
 * Excludes1: glue ear (H65.3-)
 * 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.