When the principal diagnosis is one of these 13 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
H47.41
H47.539
H47.42
H47.43
H47.49
H47.511
H47.512
H47.519
H47.521
H47.522
H47.529
H47.531
H47.532