The ICD-9 code range DISEASES OF THE EAR AND MASTOID PROCESS for 380-389 is medical classification list by the World Health Organization (WHO).
Disorders of external ear
Perichondritis of pinna
Infective otitis externa
Other otitis externa
Noninfectious disorders of pinna
Acquired stenosis of external ear canal
Other disorders of external ear
Nonsuppurative otitis media and eustachian tube disorders
Acute nonsuppurative otitis media
Chronic serous otitis media
Chronic mucoid otitis media
Eustachian salpingitis
Obstruction of eustachian tube
Other disorders of eustachian tube
Suppurative and unspecified otitis media
Acute suppurative otitis media
Mastoiditis and related conditions
Acute mastoiditis
Complications following mastoidectomy
Other disorders of tympanic membrane
Acute myringitis without mention of otitis media
Perforation of tympanic membrane
Other specified disorders of tympanic membrane
Other disorders of middle ear and mastoid
Tympanosclerosis
Tympanosclerosis, unspecified as to involvement
Tympanosclerosis involving tympanic membrane only
Tympanosclerosis involving tympanic membrane and ear ossicles
Tympanosclerosis involving tympanic membrane, ear ossicles, and middle ear
Tympanosclerosis involving other combination of structures
Adhesive middle ear disease
Other acquired abnormality of ear ossicles
Cholesteatoma of middle ear and mastoid
Other disorders of middle ear and mastoid
Vertiginous syndromes and other disorders of vestibular system
Meniere's disease
Other and unspecified peripheral vertigo
Labyrinthitis
Labyrinthine fistula
Labyrinthine dysfunction
Labyrinthine dysfunction, unspecified
Hyperactive labyrinth, unilateral
Hyperactive labyrinth, bilateral
Hypoactive labyrinth, unilateral
Hypoactive labyrinth, bilateral
Loss of labyrinthine reactivity, unilateral
Loss of labyrinthine reactivity, bilateral
Other forms and combinations of labyrinthine dysfunction
Otosclerosis
Other disorders of ear
Degenerative and vascular disorders of ear
Noise effects on inner ear
Other abnormal auditory perception
Otorrhea
Hearing loss
Conductive hearing loss
Conductive hearing loss, unspecified
Conductive hearing loss, external ear
Conductive hearing loss, tympanic membrane
Conductive hearing loss, middle ear
Conductive hearing loss, inner ear
Conductive hearing loss, unilateral
Conductive hearing loss, bilateral
Conductive hearing loss of combined types
Sensorineural hearing loss
Sensorineural hearing loss, unspecified
Sensory hearing loss, bilateral
Neural hearing loss, bilateral
Neural hearing loss, unilateral
Central hearing loss
Sensorineural hearing loss, unilateral
Sensorineural hearing loss, asymmetrical
Sensory hearing loss, unilateral
Sensorineural hearing loss, bilateral
Mixed conductive and sensorineural hearing loss