What is the icd9 code for MAPCA?

The ICD-9 code for a major aortopulmonary collateral artery (MAPCA) is 747.81. This code falls under the category of congenital anomalies of the cardiovascular system. It's important to note that ICD-9 codes have been largely replaced by ICD-10 codes, so for current coding practices, refer to the appropriate ICD-10 code.