When the principal diagnosis is one of these 29 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
C45.7–C45.9 (2 codes)C46.3C7A.00C7A.098–C7B.8 (11 codes)C76.8–C77.9 (9 codes)C80.0–C80.1 (2 codes)D49.81–D49.9 (3 codes)