034 MS-DRG: CAROTID ARTERY STENT PROCEDURES WITH MCC
MS-DRG 034 groups Medicare inpatient hospital stays for: CAROTID ARTERY STENT PROCEDURES WITH MCC. This is a surgical MS-DRG. It falls under MDC 01 (Diseases and Disorders of the Nervous System).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 01 — Diseases and Disorders of the Nervous System |
| DRG Type | Surgical |
| Severity Level | MCC |
| Relative Weight | 3.8921 |
| Relative Weight (10% Cap Applied) | 3.8921 |
| Geometric Mean Length of Stay | 4.5 days |
| Arithmetic Mean Length of Stay | 6.7 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
144 procedure codes appear in its surgical logic (Carotid Artery Stent Procedures: 144): 037H04Z, 037H05Z, 037H06Z, 037H07Z, 037H0DZ, 037H0EZ, 037H0FZ, 037H0GZ, 037H34Z, 037H35Z, 037H36Z, 037H37Z and 132 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.
Surgical Precedence (FY2027)
Within MDC 01, this DRG ranks 6 of 8 in CMS's surgical-class precedence order. When a claim qualifies for more than one surgical DRG in this MDC, the highest-ranked class applies.
- 1. Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage (DRGs 020-022)
- 2. Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (DRGs 023-024)
- 3. Craniotomy and Endovascular Intracranial Procedures (DRGs 025-027)
- 4. Spinal Procedures (DRGs 028-030)
- 5. Ventricular Shunt Procedures (DRGs 031-033)
- 6. Carotid Artery Stent Procedures (DRGs 034-036) — this DRG
- 7. Extracranial Procedures (DRGs 037-039)
- 8. Peripheral, Cranial Nerve and Other Nervous System Procedures (DRGs 040-042)
From the CMS MS-DRG Definitions Manual, Appendix D. Actual DRG assignment depends on the complete claim.
Contextual Map
Every relationship of 034 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 01 — Diseases and Disorders of the Nervous System[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining procedures (144)
- 037H04Z — Dilation of Right Common Carotid Artery with Drug-eluting Intraluminal Device, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H05Z — Dilation of Right Common Carotid Artery with Two Drug-eluting Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H06Z — Dilation of Right Common Carotid Artery with Three Drug-eluting Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H07Z — Dilation of Right Common Carotid Artery with Four or More Drug-eluting Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H0DZ — Dilation of Right Common Carotid Artery with Intraluminal Device, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H0EZ — Dilation of Right Common Carotid Artery with Two Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H0FZ — Dilation of Right Common Carotid Artery with Three Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 037H0GZ — Dilation of Right Common Carotid Artery with Four or More Intraluminal Devices, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- and 136 more
DRG family
- DRG 035 — CAROTID ARTERY STENT PROCEDURES WITH CC[DRG family]: “CAROTID ARTERY STENT PROCEDURES WITH CC — same CMS DRG family (034-036), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 034-036) · FY2027
- DRG 036 — CAROTID ARTERY STENT PROCEDURES WITHOUT CC/MCC[DRG family]: “CAROTID ARTERY STENT PROCEDURES WITHOUT CC/MCC — same CMS DRG family (034-036), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 034-036) · 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 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources