When the principal diagnosis is one of these 19 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
K31.89
K31.9
K42.0
K43.9
K45.0
K45.8
K46.0
K46.9
K92.81
K42.1
K43.1
K43.4
K43.7