When the principal diagnosis is one of these 19 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)C70.0C70.9C72.9C7A.00C7A.098–C7B.00 (4 codes)C7B.1C76.8C80.0–C80.1 (2 codes)D49.6–D49.9 (5 codes)