264 MS-DRG: OTHER CIRCULATORY SYSTEM O.R. PROCEDURES
MS-DRG 264 groups Medicare inpatient hospital stays for: OTHER CIRCULATORY SYSTEM O.R. PROCEDURES. This is a surgical MS-DRG. It falls under MDC 05 (Diseases and Disorders of the Circulatory System).
Payment & Classification Data
Official CMS values from the FY2026 IPPS Final Rule Table 5.
MS-DRG 264 is not in the FY2027 MS-DRG list. The values below are CMS's FY2026 values and apply only to discharges in that fiscal year.
| Major Diagnostic Category | MDC 05 — Diseases and Disorders of the Circulatory System |
| DRG Type | Surgical |
| Severity Level | N/A |
| Relative Weight | 3.3406 |
| Relative Weight (10% Cap Applied) | 3.3406 |
| Geometric Mean Length of Stay | 6.7 days |
| Arithmetic Mean Length of Stay | 9.7 days |
| Post-Acute Transfer DRG | Yes |
| Special Pay Transfer DRG | No |
Contextual Map
Every relationship of 264 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
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 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 20, 2026 · All releases and sources