847 MS-DRG: CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITH CC
MS-DRG 847 groups Medicare inpatient hospital stays for: CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITH CC. This is a medical MS-DRG. It falls under MDC 17 (Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms).
Payment & Classification Data
Official CMS values from the FY2027 IPPS Final Rule Table 5.
| Major Diagnostic Category | MDC 17 — Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms |
| DRG Type | Medical |
| Severity Level | CC |
| Relative Weight | 1.349 |
| Relative Weight (10% Cap Applied) | 1.349 |
| Geometric Mean Length of Stay | 3.7 days |
| Arithmetic Mean Length of Stay | 4.3 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
3 diagnosis codes can drive assignment here: Z08, Z51.11, Z51.12.
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 847 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 17 — Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms[MDC]— CMS MS-DRG Definitions Manual · FY2027
Defining diagnoses
- Z08 — Encounter for follow-up examination after completed treatment for malignant neoplasm[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- Z51.11 — Encounter for antineoplastic chemotherapy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- Z51.12 — Encounter for antineoplastic immunotherapy[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
DRG family
- DRG 846 — CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITH MCC[DRG family]: “CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITH MCC — same CMS DRG family (846-848), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 846-848) · FY2027
- DRG 848 — CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITHOUT CC/MCC[DRG family]: “CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITHOUT CC/MCC — same CMS DRG family (846-848), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 846-848) · 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