AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2018 Issue 2; Clarifications

Coronary Artery Bifurcation

Coding Clinic Fourth Quarter 2016, page 87, assigned only one code for a lesion in the left anterior descending (LAD) that extended into the diagonal 1 branch at the bifurcation. Should a lesion in the LAD, which extends into the diagonal 1 branch at the bifurcation, be coded as two separate arteries, one with Qualifier value “6” for the LAD, and one with the Qualifier value “Z” for the diagonal 1 branch?  Coders are confused about the bifurcation qualifier and if the two ICD-10-PCS codes should have been assigned and the bifurcation qualifier assigned for both vessels. ...

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