Question: Should I code the presence of a ramus intermedius as an anomaly?
Under CPT® and Correct Coding Initiative (CCI) guidelines, the RI is considered a major coronary artery. The RI is a normal variant occurring in about 10 to 30 percent of the population. Anomalies are often defined as occurring in less than 1 percent of the population.
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Answer: You should not code the ramus intermedius (RI) as an anomaly using Q24.5 (Malformation of coronary vessels).