When the principal diagnosis is one of these 51 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
E78.71–E78.72 (2 codes)I23.0–I23.3 (4 codes)I23.6–I23.8 (3 codes)I51.0Q20.0–Q20.9 (9 codes)Q21.10–Q21.9 (16 codes)Q23.81–Q23.9 (4 codes)Q24.8–Q24.9 (2 codes)Q27.30Q27.4Q28.0–Q28.1 (2 codes)Q28.8–Q28.9 (2 codes)Q87.2–Q87.3 (2 codes)Q87.81–Q87.82 (2 codes)