Chapter VIII
Diseases of the ear and mastoid process
(H60-H95)

Diseases of inner ear
(H80-H83)

H80 Otosclerosis
Includes: otospongiosis
H80.0 Otosclerosis involving oval window, nonobliterative
H80.1 Otosclerosis involving oval window, obliterative
H80.2 Cochlear otosclerosis
Otosclerosis involving:
· otic capsule
· round window
H80.8 Other otosclerosis
H80.9 Otosclerosis, unspecified

H81 Disorders of vestibular function
Excludes: vertigo:
· NOS ( R42 )
· epidemic ( A88.1 )
H81.0 Ménière's disease
Labyrinthine hydrops
Ménière's syndrome or vertigo
H81.1 Benign paroxysmal vertigo
H81.2 Vestibular neuronitis
H81.3 Other peripheral vertigo
Lermoyez' syndrome
Vertigo:
· aural
· otogenic
· peripheral NOS
H81.4 Vertigo of central origin
Central positional nystagmus
H81.8 Other disorders of vestibular function
H81.9 Disorder of vestibular function, unspecified
Vertiginous syndrome NOS

H82* Vertiginous syndromes in diseases classified elsewhere

H83 Other diseases of inner ear
H83.0 Labyrinthitis
H83.1 Labyrinthine fistula
H83.2 Labyrinthine dysfunction
Hypersensitivity
Hypofunction
Loss of function
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of labyrinth
H83.3 Noise effects on inner ear
Acoustic trauma
Noise-induced hearing loss
H83.8 Other specified diseases of inner ear
H83.9 Disease of inner ear, unspecified