When the principal diagnosis is one of these 81 codes, the CC/MCC codes assigned to this list count as non-CCs (MS-DRG v44 definitions manual, appendix C).
S45.001AS45.002AS45.009AS45.011AS45.012AS45.019AS45.091AS45.092AS45.099AS45.301AS45.302AS45.309AS45.311AS45.312AS45.319AS45.391AS45.392AS45.399AS45.801AS45.802AS45.809AS45.811AS45.812AS45.819AS45.891AS45.892AS45.899AS45.901AS45.902AS45.909AS45.911AS45.912AS45.919AS45.991AS45.992AS45.999AS55.201AS55.202AS55.209AS55.211AS55.212AS55.219AS55.291AS55.292AS55.299AS55.801AS55.802AS55.809AS55.811AS55.812AS55.819AS55.891AS55.892AS55.899AS55.901AS55.902AS55.909AS55.911AS55.912AS55.919AS55.991AS55.992AS55.999AS65.801AS65.802AS65.809AS65.811AS65.812AS65.819AS65.891AS65.892AS65.899AS65.901AS65.902AS65.909AS65.911AS65.912AS65.919AS65.991AS65.992AS65.999A