When the principal diagnosis is one of these 14 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
B46.0
B46.9
B48.3
B49
B92
B94.2
B94.9
B46.1
B46.2
B46.3
B46.4
B46.5
B46.8