When the principal diagnosis is one of these 20 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
C82.56C83.16C84.10C84.16C84.18–C84.1A (3 codes)C84.46C84.66C84.76C84.A6C84.Z6C84.96C85.16C85.26C85.86C85.96D49.81–D49.9 (3 codes)