ICD-9-CM Vol. 3 Procedure Codes →
5. OPERATIONS ON THE NOSE, MOUTH, AND PHARYNX (21-29) →
section notes
22 Operations on nasal sinuses →
section notes
22.7 Repair of nasal sinus →
section notes
22.71   Nasal sinus fistula clos
22.79   Nasal sinus repair NEC
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