ICD-9-CM Vol. 1 Diagnostic Codes →
8. DISEASES OF THE RESPIRATORY SYSTEM (460-519) →
section notes
OTHER DISEASES OF THE UPPER RESPIRATORY TRACT (470-478) →
section notes
474 Chronic disease of tonsils and adenoids →
section notes
474.00‑474.02   474.0 Chronic tonsillitis and adenoids
474.10‑474.12   474.1 Hypertrophy of tonsils and adenoids
474.2   Adenoid vegetations
474.8   Chr T & A dis NEC
474.9   Chr T & A dis NOS
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