All terms
MS-DRG
Medicare's inpatient hospital payment classification system.
Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 5, 2026
Definition
Medicare Severity Diagnosis-Related Groups classify inpatient stays into payment groups based on diagnosis, procedures, age, and complications. Each MS-DRG carries a relative weight; the hospital is paid a bundled rate regardless of actual cost.What this means in practice
For inpatient device-based procedures, MS-DRG assignment determines whether the hospital is paid enough to cover the device cost. Inadequate MS-DRG mapping is a major commercial barrier; NTAP and new technology reassignment are remedies.Primary references
3 sourcesLink health: 2 verified 1 bot-blocked· last checked 2026-05-09
CMS·1AMA·1AdvaMed·1
- 1
CMS MS-DRGVerifiedCMScms.gov
- 2
AMA CPT ResourcesBot-blockedAMAama-assn.org
- 3
AdvaMed - Payment & CoverageVerifiedAdvaMedadvamed.org
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