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

473 Chronic sinusitis

section notes
473.0   Chr maxillary sinusitis
473.1   Chr frontal sinusitis
473.2   Chr ethmoidal sinusitis
473.3   Chr sphenoidal sinusitis
473.8   Chronic sinusitis NEC
473.9   Chronic sinusitis NOS
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