MS-DRG

Medical abbreviation · Health Insurance

MS-DRG
Stands forMedicare Severity Diagnosis-Related Group
CategoriesMedical

MS-DRG stands for Medicare Severity Diagnosis-Related Group, a health insurance abbreviation.

Version of DRGs used by Medicare since fiscal year 2008, which splits many groups into tiers according to whether the patient has a major complication or comorbidity (MCC), a complication or comorbidity (CC) or neither. More severely ill patients generate higher payments.

Example: Documenting acute systolic heart failure added an MCC and moved the MS-DRG to a higher weight.

Usage notes

Each of the several hundred MS-DRGs has a relative weight updated annually. Clinical documentation integrity programs query physicians to clarify diagnoses that affect MS-DRG assignment. Some states and payers use other groupers, such as APR-DRGs, that also adjust for mortality risk.

More health insurance abbreviations

  • MCO – Managed care organization
  • MEC – Minimum essential coverage
  • MIPS – Merit-based Incentive Payment System
  • MLR – Medical loss ratio
  • MOOP – Maximum out-of-pocket
  • MPFS – Medicare Physician Fee Schedule
  • MSP – Medicare Savings Program
  • NCCI – National Correct Coding Initiative
  • NCD – National coverage determination
  • NCQA – National Committee for Quality Assurance
  • NPI – National Provider Identifier
  • NSA – No Surprises Act

See all 107 health insurance abbreviations →

This entry is for general education and is not medical advice. Abbreviation use varies between institutions; always confirm in context.