ICD-9-CM Vol. 1 Diagnostic Codes →
8. DISEASES OF THE RESPIRATORY SYSTEM (460-519) →
section notes
ACUTE RESPIRATORY INFECTIONS (460-466) →
section notes
461 Acute sinusitis →
section notes
461.0   Ac maxillary sinusitis
461.1   Ac frontal sinusitis
461.2   Ac ethmoidal sinusitis
461.3   Ac sphenoidal sinusitis
461.8   Other acute sinusitis
461.9   Acute sinusitis NOS
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