MS-DRGMedical
309
CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC
MS-DRG 309 groups Medicare inpatient hospital stays for: CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC. 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 current fiscal year's IPPS Final Rule.
| Major Diagnostic Category | MDC 05 — Diseases and Disorders of the Circulatory System |
| DRG Type | Medical |
| Severity Level | CC |
| Relative Weight | 0.7357 |
| Relative Weight (10% Cap Applied) | 0.7357 |
| Geometric Mean Length of Stay | 2.3 days |
| Arithmetic Mean Length of Stay | 2.8 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2026)
58 diagnosis codes can drive assignment here: I44.0, I44.1, I44.2, I44.30, I44.39, I44.4, I44.5, I44.60, I44.69, I44.7, I45.0, I45.10 and 46 more.
From the CMS MS-DRG Definitions Manual (Appendices B and E). Assignment also depends on severity, discharge status and the rest of the claim.