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
478 Other diseases of upper respiratory tract
section notes
478.1 Other diseases of nasal cavity and sinuses
section notes
478.11   Nasal mucositis (ulcer)
478.19   Nasal & sinus dis NEC
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