621 MS-DRG: O.R. PROCEDURES FOR OBESITY WITHOUT CC/MCC
MS-DRG 621 groups Medicare inpatient hospital stays for: O.R. PROCEDURES FOR OBESITY WITHOUT CC/MCC. This is a surgical MS-DRG. It falls under MDC 10 (Endocrine, Nutritional and Metabolic Diseases and Disorders).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 10 — Endocrine, Nutritional and Metabolic Diseases and Disorders |
| DRG Type | Surgical |
| Severity Level | None |
| Relative Weight | 1.5622 |
| Relative Weight (10% Cap Applied) | 1.5622 |
| Geometric Mean Length of Stay | 1.2 days |
| Arithmetic Mean Length of Stay | 1.3 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
298 procedure codes appear in its surgical logic (O.R. Procedures for Obesity: 298): 0D16079, 0D1607A, 0D1607B, 0D1607L, 0D160J9, 0D160JA, 0D160JB, 0D160JL, 0D160K9, 0D160KA, 0D160KB, 0D160KL and 286 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 10, this DRG ranks 5 of 6 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. Skin Grafts and Wound Debridement for Endocrine, Nutritional and Metabolic Disorders (DRGs 622-624)
- 2. Amputation of Lower Limb for Endocrine, Nutritional and Metabolic Disorders (DRGs 616-618)
- 3. Adrenal and Pituitary Procedures (DRGs 614-615)
- 4. Thyroid, Parathyroid and Thyroglossal Procedures (DRGs 625-627)
- 5. O.R. Procedures for Obesity (DRGs 619-621) — this DRG
- 6. Other Endocrine, Nutritional and Metabolic O.R. Procedures (DRGs 628-630)
From the CMS MS-DRG Definitions Manual, Appendix D. Actual DRG assignment depends on the complete claim.
Contextual Map
Every relationship of 621 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 10 — Endocrine, Nutritional and Metabolic Diseases and Disorders[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining procedures (298)
- 0D16079 — Bypass Stomach to Duodenum with Autologous Tissue Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D1607A — Bypass Stomach to Jejunum with Autologous Tissue Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D1607B — Bypass Stomach to Ileum with Autologous Tissue Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D1607L — Bypass Stomach to Transverse Colon with Autologous Tissue Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D160J9 — Bypass Stomach to Duodenum with Synthetic Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D160JA — Bypass Stomach to Jejunum with Synthetic Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D160JB — Bypass Stomach to Ileum with Synthetic Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- 0D160JL — Bypass Stomach to Transverse Colon with Synthetic Substitute, Open Approach[Grouper procedure]— CMS MS-DRG Definitions Manual (Appendix E) · FY2027
- and 290 more
DRG family
- DRG 619 — O.R. PROCEDURES FOR OBESITY WITH MCC[DRG family]: “O.R. PROCEDURES FOR OBESITY WITH MCC — same CMS DRG family (619-621), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 619-621) · FY2027
- DRG 620 — O.R. PROCEDURES FOR OBESITY WITH CC[DRG family]: “O.R. PROCEDURES FOR OBESITY WITH CC — same CMS DRG family (619-621), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 619-621) · 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