CC List 2027
MS-DRG v44.0 (FY2027, effective October 1, 2026) treats 15,113 ICD-10-CM codes as a CC (complication or comorbidity). Reported as a secondary diagnosis, a CC can move the case to a higher-weighted DRG, unless the principal diagnosis is on that code's exclusion list.
See also the MCC list. Every billable code page shows its CC/MCC status. Source: CMS MS-DRG Definitions Manual, Appendix C.
Ch. 1: Certain Infectious and Parasitic Diseases A00-B99609Ch. 2: Neoplasms C00-D49836Ch. 3: Diseases of the Blood and Blood-Forming Organs D50-D89110Ch. 4: Endocrine, Nutritional and Metabolic Diseases E00-E89229Ch. 5: Mental, Behavioral and Neurodevelopmental Disorders F01-F99338Ch. 6: Diseases of the Nervous System G00-G99218Ch. 7: Diseases of the Eye and Adnexa H00-H59259Ch. 8: Diseases of the Ear and Mastoid Process H60-H9532Ch. 9: Diseases of the Circulatory System I00-I99533Ch. 10: Diseases of the Respiratory System J00-J9988Ch. 11: Diseases of the Digestive System K00-K95264Ch. 12: Diseases of the Skin and Subcutaneous Tissue L00-L99346Ch. 13: Diseases of the Musculoskeletal System and Connective Tissue M00-M991,453Ch. 14: Diseases of the Genitourinary System N00-N99155Ch. 15: Pregnancy, Childbirth and the Puerperium O00-O9A457Ch. 16: Certain Conditions Originating in the Perinatal Period P00-P9664Ch. 17: Congenital Malformations, Deformations and Chromosomal Abnormalities Q00-Q99245Ch. 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings R00-R9930Ch. 21: Factors Influencing Health Status and Contact with Health Services Z00-Z9948
Ch. 19: Injury, Poisoning and Certain Other Consequences of External Causes S00-T888,799
Injuries to the head (S00-S09)346Injuries to the neck (S10-S19)225Injuries to the thorax (S20-S29)204Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39)394Injuries to the shoulder and upper arm (S40-S49)810Injuries to the elbow and forearm (S50-S59)1,428Injuries to the wrist, hand and fingers (S60-S69)969Injuries to the hip and thigh (S70-S79)1,143Injuries to the knee and lower leg (S80-S89)1,656Injuries to the ankle and foot (S90-S99)621Effects of foreign body entering through natural orifice (T15-T19)24Burns and corrosions of external body surface, specified by site (T20-T25)192Burns and corrosions confined to eye and internal organs (T26-T28)18Burns and corrosions of multiple and unspecified body regions (T30-T32)20Frostbite (T33-T34)74Other and unspecified effects of external causes (T66-T78)89T7911Complications of surgical and medical care, not elsewhere classified (T80-T88)575