Diseases of middle ear or mastoid
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
Middle ear, derived from the first pharyngeal (branchial) pouch; has the malleus and incus and stapes and includes the spaces of the epitympanum and mesotympanum and hypotympanum. The mastoid; normally contains "air"; the lateral boundary of the mesotympanum is where the tympanic membrane is, or normally would be located.
code elsewhere
- Congenital conductive hearing loss (AB50.0)
- Otosclerosis (AB33)
- Congenital mixed conductive and sensorineural hearing loss (AB50.2)
sections/codes in this section (AA80-AB1Z)
- Otitis media (AA80-AB0Z)
- Disorders of Eustachian tube (AB10)
- Mastoiditis or related conditions (AB11)
- Cholesteatoma of middle ear (AB12)
- Perforation of tympanic membrane (AB13)
- Acute myringitis (AB14)
- Chronic myringitis (AB15)
- Tympanosclerosis (AB16)
- Adhesive middle ear disease (AB17)
- Discontinuity or dislocation of ear ossicles (AB18)
- Acquired abnormalities of ear ossicles not related to discontinuity or dislocation (AB19)
- Polyp of middle ear (AB1A)
- Middle ear cicatrix (AB1B)
- Other specified diseases of middle ear or mastoid (AB1Y)
- Diseases of middle ear or mastoid, unspecified (AB1Z)
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