834 MS-DRG: ACUTE LEUKEMIA WITH MCC
MS-DRG 834 groups Medicare inpatient hospital stays for: ACUTE LEUKEMIA WITH MCC. 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 | MCC |
| Relative Weight | 5.508 |
| Relative Weight (10% Cap Applied) | 5.508 |
| Geometric Mean Length of Stay | 9.6 days |
| Arithmetic Mean Length of Stay | 15.4 days |
| Post-Acute Transfer DRG | No |
| Special Pay Transfer DRG | No |
Defining Codes (FY2027)
33 diagnosis codes can drive assignment here: C91.00, C91.01, C91.02, C92.00, C92.01, C92.02, C92.40, C92.41, C92.42, C92.50, C92.51, C92.52 and 21 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 834 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 (33)
- C91.00 — Acute lymphoblastic leukemia not having achieved remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C91.01 — Acute lymphoblastic leukemia, in remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C91.02 — Acute lymphoblastic leukemia, in relapse[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C92.00 — Acute myeloblastic leukemia, not having achieved remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C92.01 — Acute myeloblastic leukemia, in remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C92.02 — Acute myeloblastic leukemia, in relapse[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C92.40 — Acute promyelocytic leukemia, not having achieved remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- C92.41 — Acute promyelocytic leukemia, in remission[Grouper diagnosis]— CMS MS-DRG Definitions Manual (Appendix B) · FY2027
- and 25 more
DRG family
- DRG 835 — ACUTE LEUKEMIA WITH CC[DRG family]: “ACUTE LEUKEMIA WITH CC — same CMS DRG family (834-836), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 834-836) · FY2027
- DRG 836 — ACUTE LEUKEMIA WITHOUT CC/MCC[DRG family]: “ACUTE LEUKEMIA WITHOUT CC/MCC — same CMS DRG family (834-836), split by severity.”— CMS MS-DRG Definitions Manual (DRG family 834-836) · 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