When the principal diagnosis is one of these 34 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
D81.818
D81.819
E51.11
E53.9
E56.0
E56.8
E63.9
E64.8
E64.9
E51.12
E51.2
E51.8
E51.9
E53.0