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 9 Unspecified Eustachian tube disorder
 * H69.90 Unspecified Eustachian tube disorder, unspecified ear
 * H69.91 Unspecified Eustachian tube disorder, right ear
 * H69.92 Unspecified Eustachian tube disorder, left ear
 * H69.93 Unspecified Eustachian tube disorder, bilateral

H70 Mastoiditis and related conditions

 * H70.0 Acute mastoiditis
 * Abscess of mastoid
 * Empyema of mastoid
 * 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
 * Caries of mastoid
 * Fistula of mastoid
 * Excludes1: tuberculous mastoiditis (A18.03)
 * 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
 * Inflammation of petrous bone
 * H70.20 Unspecified petrositis
 * H70.201 Unspecified petrositis, right ear
 * H70.202 Unspecified petrositis, left ear
 * H70.