603 MS-DRG: CELLULITIS WITHOUT MCC
MS-DRG 603 groups Medicare inpatient hospital stays for: CELLULITIS WITHOUT MCC. This is a medical MS-DRG. It falls under MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast |
| DRG Type | Medical |
| Severity Level | None |
| Relative Weight | 0.8635 |
| Relative Weight (10% Cap Applied) | 0.8635 |
| Geometric Mean Length of Stay | 3.1 days |
| Arithmetic Mean Length of Stay | 3.7 days |
| Post-Acute Transfer DRG | Yes |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
159 diagnosis codes can drive assignment here: A46, B78.1, E83.2, I89.1, L01.00, L01.01, L01.02, L01.03, L01.09, L01.1, L02.01, L02.02 and 147 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.
Contextual Map
Every relationship of 603 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 09 — Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses (159)
- A46 — Erysipelas[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- B78.1 — Cutaneous strongyloidiasis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- E83.2 — Disorders of zinc metabolism[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- I89.1 — Lymphangitis[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- L01.00 — Impetigo, unspecified[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- L01.01 — Non-bullous impetigo[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- L01.02 — Bockhart's impetigo[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- L01.03 — Bullous impetigo[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 151 more
DRG family
- DRG 602 — CELLULITIS WITH MCC[DRG family]: “CELLULITIS WITH MCC — same CMS DRG family (602-603), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 602-603) · 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