Nonsuppurative otitis media Suppurative and unspecified otitis media Otitis media in diseases classified elsewhere Eustachian salpingitis and obstruction Other and unspecified disorders of Eustachian tube Mastoiditis and related conditions Cholesteatoma of middle ear Perforation of tympanic membrane Other disorders of tympanic membrane Other disorders of middle ear mastoid Other disorders of middle ear and mastoid in diseases classified elsewhere 
