290 MS-DRG: ACUTE AND SUBACUTE ENDOCARDITIS WITHOUT CC/MCC
MS-DRG 290 groups Medicare inpatient hospital stays for: ACUTE AND SUBACUTE ENDOCARDITIS WITHOUT CC/MCC. This is a medical MS-DRG. It falls under MDC 05 (Diseases and Disorders of the Circulatory System).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 05 — Diseases and Disorders of the Circulatory System |
| DRG Type | Medical |
| Severity Level | None |
| Relative Weight | 0.7846 |
| Relative Weight (10% Cap Applied) | 0.8367 |
| Geometric Mean Length of Stay | 2.4 days |
| Arithmetic Mean Length of Stay | 3 days |
| Post-Acute Transfer DRG | Yes |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
5 diagnosis codes can drive assignment here: A39.51, A52.03, B37.6, I33.0, I33.9.
From the CMS MS-DRG Definitions Manual (Appendices B and E). Assignment also depends on severity, discharge status and the rest of the claim.
Contextual Map
Every relationship of 290 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Major Diagnostic Category
- MDC 05 — Diseases and Disorders of the Circulatory System[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses
- A39.51 — Meningococcal endocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- A52.03 — Syphilitic endocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- B37.6 — Candidal endocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- I33.0 — Acute and subacute infective endocarditis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- I33.9 — Acute and subacute endocarditis, unspecified[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
DRG family
- DRG 288 — ACUTE AND SUBACUTE ENDOCARDITIS WITH MCC[DRG family]: “ACUTE AND SUBACUTE ENDOCARDITIS WITH MCC — same CMS DRG family (288-290), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 288-290) · FY2027
- DRG 289 — ACUTE AND SUBACUTE ENDOCARDITIS WITH CC[DRG family]: “ACUTE AND SUBACUTE ENDOCARDITIS WITH CC — same CMS DRG family (288-290), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 288-290) · FY2027
Read from: CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v44. All data sources · How to read the labels · How MedCoder verifies its implementation
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources