When the principal diagnosis is one of these 45 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)C64.1–C65.9 (6 codes)C68.8–C68.9 (2 codes)C7A.00–C7B.00 (24 codes)C7B.1C76.8C80.0–C80.1 (2 codes)D49.511–D49.59 (4 codes)D49.81–D49.9 (3 codes)