When the principal diagnosis is one of these 19 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
I27.841–I27.849 (3 codes)I87.8–I87.9 (2 codes)I99.8–I99.9 (2 codes)M30.0–M31.0 (6 codes)M31.30–M31.7 (6 codes)