ICD-9-CM Vol. 1 Diagnostic Codes

6. DISEASES OF THE NERVOUS SYSTEM AND SENSE ORGANS (320-389)

section notes

DISEASES OF THE EAR AND MASTOID PROCESS (380-389)

section notes

383 Mastoiditis and related conditions

section notes
383.00383.02   383.0 Acute mastoiditis
383.20383.22   383.2 Petrositis
383.30383.33   383.3 Complications following mastoidectomy
383.1   Chronic mastoiditis
383.9   Mastoiditis NOS
383.81383.89   383.8 Other disorders of mastoid
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