Instructor’s Guide for ICD-9-CM Diagnostic Coding and ...

Direct open arteriovenous anastomosis should be coded 36821. ... A patient underwent the surgical treatment of an anal fistula, which required a submuscular fistulectomy. ... CPT code 37220 should be coded with a code such as 34802 only when 37220 is performed on two vessels from one anatomic structure and another vessel in a different anatomic ... ................
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