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
380 Disorders of external ear →
section notes
380.2 Other otitis externa →
section notes
380.21   Cholesteatoma extern ear
380.22   Acute otitis externa NEC
380.23   Chr otitis externa NEC
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