Identify the terms used to look up the code selection in the Alphabetic Index. Assign CPT codes to the cases. If applicable, append CPT/HCPCS Level II modifiers.

Operative Note:

Diagnosis: Thrombosis of right AV (Gore-Tex) graft

Procedure: A transverse incision was made in order to complete a thrombectomy of the graft. Because the balloon catheter could not be passed, it was elected to perform an arteriotomy for removal of the thrombus. The area was irrigated and the incision was closed.

Index:
Thrombectomy, Arteriovenous Fistula, Graft. This is an open approach since the arteriotomy was performed.

TIP: Many experienced coders rely mainly on the index to provide the range of codes and do not focus on locating the exact index entry.

Code(s):
36831 Thrombectomy, open, arteriovenous fistula without revision