DISEASES OF THE EAR AND MASTOID PROCESS (380-389)
Use additional external cause code, if applicable, to identify the cause of the ear condition
383 Mastoiditis and related conditions
383.0: Acute mastoiditis
Abscess of mastoid
Empyema of mastoid
383.1: Chronic mastoiditis
Caries of mastoid
Fistula of mastoid
Excludes:
tuberculous mastoiditis (015.6)
383.2: Petrositis
Coalescing osteitis of petrous bone
Inflammation of petrous bone
Osteomyelitis of petrous bone
383.3: Complications following mastoidectomy
383.8: Other disorders of mastoid
383.9: Unspecified mastoiditis
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