| Surgical Hierarchy | MS-DRG |
| Pre-MDC |
| Heart Transplant or Implant of Heart Assist System | 001-002 |
| ECMO or Tracheostomy with MV >96 Hours or PDX Except Face, Mouth and Neck | 003-004 |
| Liver or Intestinal Transplant | 005-006 |
| Allogeneic Bone Marrow Transplant | 014 |
| Lung Transplant | 007 |
| Simultaneous Pancreas/Kidney Transplant | 008 |
| Autologous Bone Marrow Transplant | 016-017 |
| Pancreas Transplant | 010 |
| Tracheostomy for Face, Mouth and Neck Diagnoses | 011-013 |
| MDC 01,Diseases & Disorders of the Nervous System |
| Intracranial Vascular Procedures with PDX Hemorrhage | 020-022 |
| Craniotomy | 023-027 |
| Spinal Procedures | 028-030 |
| Ventricular Shunt Procedures | 031-033 |
| Carotid Artery Stent Procedures | 034-036 |
| Extracranial Procedures | 037-039 |
| Peripheral and Cranial Nerve and Other Nervous System Procedures | 040-042 |
| MDC 02,Diseases & Disorders of the Eye |
| Orbital Procedures | 113-114 |
| Extraocular Procedures Except Orbit | 115 |
| Intraocular Procedures | 116-117 |
| MDC 03,Diseases & Disorders of the Ear, Nose, Mouth & Throat |
| Major Head and Neck Procedures | 129-130 |
| Cranial/Facial Procedures | 131-132 |
| Other Ear, Nose, Mouth and Throat Procedures | 133-134 |
| Sinus and Mastoid Procedures | 135-136 |
| Mouth Procedures | 137-138 |
| Salivary Gland Procedures | 139 |
| MDC 04,Diseases & Disorders of the Respiratory System |
| Major Chest Procedures | 163-165 |
| Other Respiratory System Procedures | 166-168 |
| MDC 05,Diseases & Disorders of the Circulatory System |
| Other Heart Assist System Implant | 215 |
| Cardiac Valve and Other Major Cardiothoracic Procedures | 216-221 |
| Endovascular Procedures | 266-267 |
| Cardiac Defibrillator Implant | 222-227 |
| Other Cardiothoracic Procedures | 228-230 |
| Coronary Bypass | 231-236 |
| Aortic and Heart Assist Procedures | 268-269 |
| Other Major Cardiovascular Procedures | 270-272 |
| Amputation for Circulatory System Disorders Except Upper Limb and Toe | 239-241 |
| Permanent Cardiac Pacemaker Implant | 242-244 |
| AICD Generator Procedures | 245 |
| AICD Lead Procedures | 265 |
| Percutaneous Intracardiac Procedures | 273-274 |
| Percutaneous Cardiovascular Procedures with Coronary Artery Stent | 246-249 |
| Percutaneous Cardiovascular Procedures without Coronary Artery Stent | 250-251 |
| Other Vascular Procedures | 252-254 |
| Upper Limb and Toe Amputation for Circulatory System Disorders | 255-257 |
| Cardiac Pacemaker Device Replacement | 258-259 |
| Cardiac Pacemaker Revision Except Device Replacement | 260-262 |
| Vein Ligation and Stripping | 263 |
| Other Circulatory Procedures | 264 |
| MDC 06,Diseases & Disorders of the Digestive System |
| Stomach, Esophageal and Duodenal Procedures | 326-328 |
| Major Small and Large Bowel Procedures | 329-331 |
| Rectal Resection | 332-334 |
| Peritoneal Adhesiolysis | 335-337 |
| Appendectomy | 338-343 |
| Minor Small and Large Bowel Procedures | 344-346 |
| Anal and Stomal Procedures | 347-349 |
| Hernia Procedures | 350-355 |
| Other Digestive System Procedures | 356-358 |
| MDC 07,Diseases & Disorders of the Hepatobiliary System & Pancreas |
| Pancreas, Liver and Shunt Procedures | 405-407 |
| Biliary Tract Procedures Except Only Cholecystectomy with or without C.D.E. | 408-410 |
| Cholecystectomy | 411-419 |
| Hepatobiliary Diagnostic Procedures | 420-422 |
| Other Hepatobiliary or Pancreas Procedures | 423-425 |
| MDC 08,Diseases & Disorders of the Musculoskeletal System & Connective Tissue |
| Combined Anterior/Posterior Spinal Fusion | 453-455 |
| Spinal Fusion Except Cervical with Spinal Curvature / Malignancy / Infection or Extensive Fusions | 456-458 |
| Spinal Fusion Except Cervical | 459-460 |
| Bilateral or Multiple Major Joint Procedures of Lower Extremity | 461-462 |
| Wound Debridement and Skin Graft Except Hand, for Musculoskeletal and Connective Tissue Disorders | 463-465 |
| Revision of Hip or Knee Replacement | 466-468 |
| Major Joint Replacement or Reattachment of Lower Extremity | 469-470 |
| Cervical Spinal Fusion | 471-473 |
| Amputation for Musculoskeletal System and Connective Tissue Disorders | 474-476 |
| Biopsies of Musculoskeletal System and Connective Tissue | 477-479 |
| Hip and Femur Procedures Except Major Joint | 480-482 |
| Major Joint and Limb Reattachment Procedures of Upper Extremity | 483 |
| Knee Procedures | 485-489 |
| Back and Neck Procedures, Except Spinal Fusion, or Disc Devices/Neurostimulators | 518-520 |
| Lower Extremity and Humerus Procedures Except Hip,Foot,Femur | 492-494 |
| Local Excision and Removal Int Fix Devices Except Hip and Femur | 495-497 |
| Local Excision and Removal Int Fix Devices of Hip and Femur | 498-499 |
| Soft Tissue Procedures | 500-502 |
| Foot Procedures | 503-505 |
| Major Thumb or Joint Procedures | 506 |
| Major Shoulder or Elbow Joint Procedures | 507-508 |
| Arthoscopy | 509 |
| Shoulder, Elbow or Forearm Procedures, Except Major Joint Procedures | 510-512 |
| Hand or Wrist Procedures, Except Major Thumb or Joint Procedures | 513-514 |
| Other Musculoskeletal System and Connective Tissue Procedures | 515-517 |
| MDC 09,Diseases & Disorders of the Skin, Subcutaneous Tissue & Breast |
| Skin Graft | 573-578 |
| Skin Debridement | 570-572 |
| Other Skin, Subcutaneous Tissue and Breast Procedures | 579-581 |
| Mastectomy for Malignancy | 582-583 |
| Breast Biopsy, Local Excision and Other Breast Procedures | 584-585 |
| MDC 10,Endocrine, Nutritional & Metabolic Diseases & Disorders |
| Amputation of Lower Limb for Endocrine, Nutritional and Metabolic Disorders | 616-618 |
| Procedures for Obesity | 619-621 |
| Skin Grafts and Wound Debridement for Endocrine, Nutritional and Metabolic Disorders | 622-624 |
| Adrenal and Pituitary Procedures | 614-615 |
| Thyroid, Parathyroid and Thyroglossal Procedures | 625-627 |
| Other Endocrine, Nutritional and Metabolic Procedures | 628-630 |
| MDC 11,Diseases & Disorders of the Kidney & Urinary Tract |
| Kidney Transplant | 652 |
| Major Bladder Procedures | 653-655 |
| Kidney and Ureter Procedures | 656-661 |
| Minor Bladder Procedures | 662-664 |
| Prostatectomy | 665-667 |
| Transurethral Procedures | 668-670 |
| Urethral Procedures | 671-672 |
| Other Kidney and Urinary Tract Procedures | 673-675 |
| MDC 12,Diseases & Disorders of the Male Reproductive System |
| Major Male Pelvic Procedures | 707-708 |
| Penis Procedures | 709-710 |
| Testes Procedures | 711-712 |
| Transurethral Prostatectomy | 713-714 |
| Other Male Reproductive System Procedures | 715-718 |
| MDC 13,Diseases & Disorders of the Female Reproductive System |
| Pelvic Evisceration, Radical Hysterectomy and Radical Vulvectomy | 734-735 |
| Uterine and Adnexal Procedures for Malignancy | 736-741 |
| Uterine and Adnexal Procedures for Non-Malignancy | 742-743 |
| D&C, Conization, Laparoscopy and Tubal Interruption | 744-745 |
| Vagina, Cervix and Vulva Procedures | 746-747 |
| Female Reproductive System Reconstructive Procedures | 748 |
| Other Female Reproductive System Procedures | 749-750 |
| MDC 14,Pregnancy, Childbirth & the Puerperium |
| Cesarean Section | 765-766 |
| Postpartum and Post Abortion Diagnoses with Major Procedure | 769 |
| Abortion with D&C, Aspiration Curettage or Hysterotomy | 770 |
| Vaginal Delivery with O.R. procedure | 767-768 |
| MDC 15,Newborns & Other Neonates with Conditions Originating in Perinatal Period |
| None |
| MDC 16,Diseases & Disorders of Blood, Blood Forming Organs, Immunologic Disorders |
| Splenectomy | 799-801 |
| Other Procedures of the Blood and Blood Forming Organs | 802-804 |
| MDC 17,Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms |
| Lymphoma and Leukemia with Major Procedure | 820-822 |
| Lymphoma and Non-Acute Leukemia with Other listed Procedure | 823-825 |
| Myeloproliferative Disorders or Poorly Differentiated Neoplasms | 826-830 |
| MDC 18,Infectious & Parasitic Diseases, Systemic or Unspecified Sites |
| Postoperative or Post-Traumatic Infections with Procedure | 856-858 |
| Infections and Parasitic Diseases with listed Procedure | 853-855 |
| MDC 19,Mental Diseases & Disorders |
| Major Procedure with Principal Diagnosis of Mental Illness | 876 |
| MDC 20,Alcohol/Drug Use & Alcohol/Drug Induced Organic Mental Disorders |
| None |
| MDC 21,Injuries, Poisonings & Toxic Effects of Drugs |
| Wound Debridements for Injuries | 901-903 |
| Skin Grafts for Injuries | 904-905 |
| Hand Procedures for Injuries | 906 |
| Other Procedures for Injuries | 907-909 |
| MDC 22,Burns |
| Extensive Burns or Full Thickness Burns with MV >96 Hours | 927,933 |
| Full Thickness Burns | 928-929,934 |
| MDC 23,Factors Influencing Health Status & Other Contacts with Health Services |
| Major Procedures with Diagnosis of Other Contact with Health Services | 939-941 |
| MDC 24,Multiple Significant Trauma |
| Craniotomy for Multiple Significant Trauma | 955 |
| Limb Reattachment, Hip and Femur Procedures for Multiple Significant Trauma | 956 |
| Other Procedures for Multiple Significant Trauma | 957-959 |
| MDC 25,Human Immunodeficiency Virus Infections |
| HIV with Extensive Procedure | 969-970 |