AMA CPT® Assistant - 1993 Issue 4 (April)

Endoscopic Sinus Surgery (Winter 1993)

Winter 1993 pages 22-25 Coding Clarification Endoscopic Sinus Surgery Introduction The paranasal sinuses are air spaces lined by a mucous secreting membrane that connect to the nasal cavity through small openings. Another word for this opening is an ostium. If the ostium of a sinus becomes blocked, obstruction of mucous flow occurs resulting in stagnation and infection. This is usually associated with marked thickening of the lining mucous membrane. At this point, surgical enlargement of the opening into the nose may be considered sometimes, along with removal of the thickened infected lining mucous membrane. There are four separate sinus...

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CPT® Assistant content is the official source for CPT® coding guidance. It is an instrumental tool when appealing insurance denials and validating coding to auditors. Monthly issues and an extensive archive provide comprehensive guidance on proper CPT® coding for past, present and upcoming code set releases. Archives date back to 1990 for historical use of codes, changes, rationales, coding tips and trends in the industry.

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