MS-DRG · FY 2026 v43.0

MS-DRG 835 – Acute Leukemia with CC

A Medical DRG in MDC 17 (Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms). Inpatient cases group to DRG 835 when the ICD-10-CM principal diagnosis is one of the 33 codes listed below and a secondary diagnosis on the complication or comorbidity (CC) list is present. Its FY 2026 relative weight is 2.0858 with a geometric mean length of stay of 4.4 days.

Medical DRG – assigned by principal diagnosis✓ Official CMS v43.0 dataset
2.0858
Relative Weight
4.4
Geometric Mean LOS (days)
6.8
Arithmetic Mean LOS (days)
33
Principal Diagnosis Codes

Severity family

DRG 834with MCCWeight 5.4899 · GMLOS 9.6 daysDRG 835with CCWeight 2.0858 · GMLOS 4.4 daysDRG 836without CC/MCCWeight 1.2195 · GMLOS 2.9 days
How a case is assigned to DRG 835

The grouper first assigns the case to MDC 17 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 834; with CC → 835; without CC/MCC → 836.

ICD-10-CM

Principal Diagnosis Codes 33 codes · 5 categories

33 of 33 shown
C91 Lymphoid leukemia3 codes
  • C91.00 Acute lymphoblastic leukemia not having achieved remission
  • C91.01 Acute lymphoblastic leukemia, in remission
  • C91.02 Acute lymphoblastic leukemia, in relapse
C92 Myeloid leukemia15 codes
  • C92.00 Acute myeloblastic leukemia, not having achieved remission
  • C92.01 Acute myeloblastic leukemia, in remission
  • C92.02 Acute myeloblastic leukemia, in relapse
  • C92.40 Acute promyelocytic leukemia, not having achieved remission
  • C92.41 Acute promyelocytic leukemia, in remission
  • C92.42 Acute promyelocytic leukemia, in relapse
  • C92.50 Acute myelomonocytic leukemia, not having achieved remission
  • C92.51 Acute myelomonocytic leukemia, in remission
  • C92.52 Acute myelomonocytic leukemia, in relapse
  • C92.60 Acute myeloid leukemia with 11q23-abnormality not having achieved remission
  • C92.61 Acute myeloid leukemia with 11q23-abnormality in remission
  • C92.62 Acute myeloid leukemia with 11q23-abnormality in relapse
  • C92.A0 Acute myeloid leukemia with multilineage dysplasia, not having achieved remission
  • C92.A1 Acute myeloid leukemia with multilineage dysplasia, in remission
  • C92.A2 Acute myeloid leukemia with multilineage dysplasia, in relapse
C93 Monocytic leukemia3 codes
  • C93.00 Acute monoblastic/monocytic leukemia, not having achieved remission
  • C93.01 Acute monoblastic/monocytic leukemia, in remission
  • C93.02 Acute monoblastic/monocytic leukemia, in relapse
C94 Other leukemias of specified cell type9 codes
  • C94.00 Acute erythroid leukemia, not having achieved remission
  • C94.01 Acute erythroid leukemia, in remission
  • C94.02 Acute erythroid leukemia, in relapse
  • C94.20 Acute megakaryoblastic leukemia not having achieved remission
  • C94.21 Acute megakaryoblastic leukemia, in remission
  • C94.22 Acute megakaryoblastic leukemia, in relapse
  • C94.40 Acute panmyelosis with myelofibrosis not having achieved remission
  • C94.41 Acute panmyelosis with myelofibrosis, in remission
  • C94.42 Acute panmyelosis with myelofibrosis, in relapse
C95 Leukemia of unspecified cell type3 codes
  • C95.00 Acute leukemia of unspecified cell type not having achieved remission
  • C95.01 Acute leukemia of unspecified cell type, in remission
  • C95.02 Acute leukemia of unspecified cell type, in relapse
ICD-10-PCS

Procedure Codes

Procedure codes do not drive assignment for this DRG. DRG 835 is a Medical DRG, assigned from the principal diagnosis above.

Frequently Asked Questions

What is MS-DRG 835?

MS-DRG 835 (Acute Leukemia with CC) is a medical DRG in MDC 17 (Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms). Its FY 2026 relative weight is 2.0858 with a geometric mean length of stay of 4.4 days.

What is the difference between DRG 834, 835, 836?

All 3 share the same base category; the severity of secondary diagnoses separates them: 834 (with MCC), 835 (with CC), 836 (without CC/MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.

How many diagnosis codes group to DRG 835?

33 ICD-10-CM principal diagnosis codes group to this DRG, spanning 5 three-character categories.

What is the relative weight of DRG 835?

The FY 2026 relative weight of this DRG is 2.0858, meaning reimbursement of roughly 2.09 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.

← PreviousDRG 834 – Acute Leukemia with MCC
Source: CMS ICD-10 MS-DRG v43.0 Definitions Manual and the FY 2026 IPPS Final Rule (Table 5), effective October 1, 2025 through September 30, 2026. We publish the DRG assignments as CMS defines them and add the navigation, search, and code links.