When the principal diagnosis is one of these 18 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
A33P29.0–P29.2 (4 codes)P29.4P29.89–P29.9 (2 codes)P94.1–P94.9 (4 codes)P96.0P96.3–P96.5 (2 codes)P96.82–P96.89 (3 codes)