| Code(s) | | Description |
| 001 | ‑ | 015 | | PRE-MDC |
| 020 | ‑ | 103 | | MDC 01: DISEASES & DISORDERS OF THE NERVOUS SYSTEM |
| 113 | ‑ | 125 | | MDC 02: DISEASES & DISORDERS OF THE EYE |
| 129 | ‑ | 159 | | MDC 03: DISEASES & DISORDERS OF THE EAR, NOSE, MOUTH & THROAT |
| 163 | ‑ | 208 | | MDC 04: DISEASES & DISORDERS OF THE RESPIRATORY SYSTEM |
| 216 | ‑ | 316 | | MDC 05: DISEASES & DISORDERS OF THE CIRCULATORY SYSTEM |
| 326 | ‑ | 395 | | MDC 06: DISEASES & DISORDERS OF THE DIGESTIVE SYSTEM |
| 405 | ‑ | 446 | | MDC 07: DISEASES & DISORDERS OF THE HEPATOBILIARY SYSTEM & PANCREAS |
| 453 | ‑ | 566 | | MDC 08: DISEASES & DISORDERS OF THE MUSCULOSKELETAL SYSTEM & CONN TISSUE |
| 570 | ‑ | 607 | | MDC 09: DISEASES & DISORDERS OF THE SKIN, SUBCUTANEOUS TISSUE & BREAST |
| 614 | ‑ | 645 | | MDC 10: ENDOCRINE, NUTRITIONAL & METABOLIC DISEASES & DISORDERS |
| 653 | ‑ | 700 | | MDC 11: DISEASES & DISORDERS OF THE KIDNEY & URINARY TRACT |
| 707 | ‑ | 730 | | MDC 12: DISEASES & DISORDERS OF THE MALE REPRODUCTIVE SYSTEM |
| 734 | ‑ | 761 | | MDC 13: DISEASES & DISORDERS OF THE FEMALE REPRODUCTIVE SYSTEM |
| 765 | ‑ | 768 | | MDC 14: PREGNANCY, CHILDBIRTH & THE PUERPERIUM |
| 791 | ‑ | 792 | | MDC 15: NEWBORNS & OTHER NEONATES WITH CONDTN ORIG IN PERINATAL PERIOD |
| 799 | ‑ | 816 | | MDC 16: DISEASES & DISORDERS OF BLOOD, BLOOD FORMING ORGANS, IMMUNOLOG DISORD |
| 820 | ‑ | 848 | | MDC 17: MYELOPROLIFERATIVE DISEASES & DISORDERS, POORLY DIFFERENTIATED NEOPLASM |
| 853 | ‑ | 872 | | MDC 18: INFECTIOUS & PARASITIC DISEASES, SYSTEMIC OR UNSPECIFIED SITES |
| 876 | ‑ | 887 | | MDC 19: MENTAL DISEASES & DISORDERS |
| 895 | ‑ | 897 | | MDC 20: ALCOHOL/DRUG USE & ALCOHOL/DRUG INDUCED ORGANIC MENTAL DISORDERS |
| 901 | ‑ | 923 | | MDC 21: INJURIES, POISONINGS & TOXIC EFFECTS OF DRUGS |
| 928 | ‑ | 929 | | MDC 22: BURNS |
| 939 | ‑ | 950 | | MDC 23: FACTORS INFLUENCING HLTH STAT & OTHR CONTACTS WITH HLTH SERVCS |
| 957 | ‑ | 965 | | MDC 24: MULTIPLE SIGNIFICANT TRAUMA |
| 969 | ‑ | 976 | | MDC 25: HUMAN IMMUNODEFICIENCY VIRUS INFECTIONS |
| 981 | ‑ | 989 | | UNRELATED OPERATING ROOM PROCEDURES |
| 998 | ‑ | 999 | | INVALID AND UNGROUPABLE DRGS |