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
472 Chronic pharyngitis and nasopharyngitis →
section notes
472.0   Chronic rhinitis
472.1   Chronic pharyngitis
472.2   Chronic nasopharyngitis
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