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).
C82.54C83.14C84.10C84.14C84.18–C84.1A (3 codes)C84.44C84.64C84.74C84.A4C84.Z4C84.94C85.14C85.24C85.84C85.94D49.81–D49.9 (3 codes)