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2025 ICD-10 MS-DRG Classification
Medicare Severity-Diagnosis Related Group v40

Medicare Severity-Diagnosis Related Groups are assigned a Major Diagnostic Category (MDC). Each of the Medicare Severity Diagnosis Related Groups is defined by a particular set of patient attributes which include principal diagnosis, specific secondary diagnoses, procedures, sex and discharge status.

Major Diagnostic Category (MDC)

  • 00 - Pre-MDC
  • 01 - Diseases & Disorders of the Nervous System
  • 02 - Diseases & Disorders of the Eye
  • 03 - Diseases & Disorders of the Ear, Nose, Mouth & Throat
  • 04 - Diseases & Disorders of the Respiratory System
  • 05 - Diseases & Disorders of the Circulatory System
  • 06 - Diseases & Disorders of the Digestive System
  • 07 - Diseases & Disorders of the Hepatobiliary System & Pancreas
  • 08 - Diseases & Disorders of the Musculoskeletal System & Connective Tissue
  • 09 - Diseases & Disorders of the Skin, Subcutaneous Tissue & Breast
  • 10 - Endocrine, Nutritional & Metabolic Diseases & Disorders
  • 11 - Diseases & Disorders of the Kidney & Urinary Tract
  • 12 - Diseases & Disorders of the Male Reproductive System
  • 13 - Diseases & Disorders of the Female Reproductive System
  • 14 - Pregnancy, Childbirth & the Puerperium
  • 15 - Newborns & Other Neonates with Conditions Originating in Perinatal Period
  • 16 - Diseases & Disorders of Blood, Blood Forming Organs, Immunologic Disorders
  • 17 - Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms
  • 18 - Infectious & Parasitic Diseases, Systemic or Unspecified Sites
  • 19 - Mental Diseases & Disorders
  • 20 - Alcohol/Drug Use & Alcohol/Drug Induced Organic Mental Disorders
  • 21 - Injuries, Poisonings & Toxic Effects of Drugs
  • 22 - Burns
  • 23 - Factors Influencing Health Status & Other Contacts with Health Services
  • 24 - Multiple Significant Trauma
  • 25 - Human Immunodeficiency Virus Infections
  • 99 - Other