When the principal diagnosis is one of these 10 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
M99.16
M99.17
M99.19
S03.1XXA
S33.30XA
S33.39XA
S73.011A
S73.013A
S73.014A
S73.016A