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Is a Ramus Intermedius a coronary artery anomaly?

Julie Posted Mon 05th of August, 2013 00:04:58 AM

I know the presence of a Ramus Intermedius coronary artery is considered a normal anatomical variant, but does that mean I WOULDN'T code it because it's "normal", or I WOULD code it ( as a coronary artery anomaly) because it's a "variant"?

SuperCoder Answered Wed 07th of August, 2013 00:02:28 AM

Considering it normal and not an anomaly seems the more likely approach. Under CPT guidelines, the RI is considered a major coronary artery. Estimates are usually about 10-30 percent of the population. These two sites define anomalies as occurring in less than 1 percent of the population:

http://www.radiologyassistant.nl/en/p48275120e2ed5/coronary-anatomy-and-anomalies.html
http://emedicine.medscape.com/article/153512-overview

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