MS-DRG 839 – Chemotherapy with Acute Leukemia as Secondary Diagnosis without CC/MCC
A Medical DRG in MDC 17 (Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms). Inpatient cases group to DRG 839 when the ICD-10-CM principal diagnosis is one of the 36 codes listed below and no secondary diagnosis on the CC or MCC lists is present. Its FY 2026 relative weight is 1.4439 with a geometric mean length of stay of 4.0 days.
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).
Principal Diagnosis Codes 36 codes · 7 categories
C91 Lymphoid leukemia3 codes
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
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
Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm1 code
- Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm
Procedure Codes
Severity Exclusions 33 codes
When a case groups to DRG 839, these secondary diagnoses do not count as a CC or MCC for the severity split.
View excluded secondary diagnoses33
- C91.00 Acute lymphoblastic leukemia not having achieved remission
- C91.01 Acute lymphoblastic leukemia, in remission
- C91.02 Acute lymphoblastic leukemia, in relapse
- 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 w 11q23-abnormality not achieve remis
- C92.61 Acute myeloid leukemia with 11q23-abnormality in remission
- C92.62 Acute myeloid leukemia with 11q23-abnormality in relapse
- C92.A0 Acute myeloid leuk w multilin dysplasia, not achieve remis
- C92.A1 Acute myeloid leukemia w multilin dysplasia, in remission
- C92.A2 Acute myeloid leukemia w multilineage dysplasia, in relapse
- C93.00 Acute monoblastic/monocytic leukemia, not achieve remission
- C93.01 Acute monoblastic/monocytic leukemia, in remission
- C93.02 Acute monoblastic/monocytic leukemia, in relapse
- 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 achieve remission
- C94.21 Acute megakaryoblastic leukemia, in remission
- C94.22 Acute megakaryoblastic leukemia, in relapse
- C94.40 Acute panmyelosis w myelofibrosis not achieve remission
- C94.41 Acute panmyelosis with myelofibrosis, in remission
- C94.42 Acute panmyelosis with myelofibrosis, in relapse
- C95.00 Acute leukemia of unsp cell type not achieve remission
- C95.01 Acute leukemia of unspecified cell type, in remission
- C95.02 Acute leukemia of unspecified cell type, in relapse
Frequently Asked Questions
What is MS-DRG 839?
MS-DRG 839 (Chemotherapy with Acute Leukemia as Secondary Diagnosis without CC/MCC) is a medical DRG in MDC 17 (Myeloproliferative Diseases & Disorders, Poorly Differentiated Neoplasms). Its FY 2026 relative weight is 1.4439 with a geometric mean length of stay of 4.0 days.
How many diagnosis codes group to DRG 839?
36 ICD-10-CM principal diagnosis codes group to this DRG, spanning 7 three-character categories.
What is the relative weight of DRG 839?
The FY 2026 relative weight of this DRG is 1.4439, meaning reimbursement of roughly 1.44 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
