Cardiology Coding Alert
Reader Question:
746.85 Doesn't Apply to RI
Published on Thu Oct 10, 2013
Question: Should I code the presence of a ramus intermedius as an anomaly?
Codify Subscriber
Answer: You should not code the ramus intermedius (RI) as an anomaly using 746.85 (Coronary artery anomaly congenital) (ICD-10-CM: Q24.5, Malformation of coronary vessels). 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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