596 MS-DRG: MAJOR SKIN DISORDERS WITHOUT MCC
MS-DRG 596 groups Medicare inpatient hospital stays for: MAJOR SKIN DISORDERS 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 | 1.1071 |
| Relative Weight (10% Cap Applied) | 1.1071 |
| Geometric Mean Length of Stay | 3.5 days |
| Arithmetic Mean Length of Stay | 4.6 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
115 diagnosis codes can drive assignment here: B02.9, C43.0, C43.20, C43.21, C43.22, C43.30, C43.31, C43.39, C43.4, C43.51, C43.52, C43.59 and 103 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 596 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 (115)
- B02.9 — Zoster without complications[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.0 — Malignant melanoma of lip[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.20 — Malignant melanoma of unspecified ear and external auricular canal[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.21 — Malignant melanoma of right ear and external auricular canal[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.22 — Malignant melanoma of left ear and external auricular canal[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.30 — Malignant melanoma of unspecified part of face[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.31 — Malignant melanoma of nose[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C43.39 — Malignant melanoma of other parts of face[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 107 more
DRG family
- DRG 595 — MAJOR SKIN DISORDERS WITH MCC[DRG family]: “MAJOR SKIN DISORDERS WITH MCC — same CMS DRG family (595-596), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 595-596) · 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