When the principal diagnosis is one of these 25 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)C7A.00C7A.098–C7B.8 (11 codes)C76.8C79.51–C79.52 (2 codes)C79.83–C80.1 (5 codes)D49.81–D49.9 (3 codes)