AHA Coding Clinic® for ICD-9 - 1991 First Quarter

Coronary Artery Bypass Graft (CABG)

The Central Office on ICD-9-CM continues to receive questions regarding code assignments for coronary artery bypass graft procedures. This information is provided in an effort to clarify coding of these procedures. The axis for coding aortocoronary artery bypass grafts (CABG) was described in Coding Clinic, Fourth Quarter 1989, pages 3-5; however, coders continue to have difficulty determining the number of arteries involved in multiple bypass grafts. The following information is provided to assist the coder in making this determination. Coronary circulation consists of two main arteries, right and left, each with several branches: Right coronary artery (RCA) Right marginal...

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