When the principal diagnosis is one of these 27 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
C56.1–C57.4 (15 codes)C7A.00C7A.098–C7B.00 (4 codes)C7B.1C76.3C79.60–C79.62 (3 codes)C80.0–C80.1 (2 codes)