When the principal diagnosis is one of these 25 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
E09.51–E09.52 (2 codes)E10.51–E10.52 (2 codes)E11.51–E11.52 (2 codes)E13.51–E13.52 (2 codes)I27.841–I27.849 (3 codes)I99.8–I99.9 (2 codes)M30.0–M31.19 (9 codes)M31.5–M31.7 (3 codes)