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).
C82.52C83.12C84.00C84.02C84.08–C84.0A (3 codes)C84.42C84.62C84.72C84.A2C84.Z2C84.92C85.12C85.22C85.82C85.92D49.81–D49.9 (3 codes)