DRG 809
Medical DRGMajor Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CC
What is MS-DRG 809?
MS-DRG 809 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 16 (MDC 16) with a Complication or Comorbidity (CC). It maps to 63 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 1.2659 with a geometric mean length of stay of 3.3 days and an arithmetic mean of 4.3 days. Hospitals use this grouping to determine reimbursement for inpatient stays under Medicare.
FY 2026 Payment Data
Official values from Table 5 of the FY 2026 IPPS Final Rule (CMS).
Related MS-DRGs in This Severity Group
The same clinical condition is split into separate DRGs by complication severity. MCC pays more than CC, which pays more than no CC/MCC.
| DRG | Title | Rel. Weight | GMLOS |
|---|---|---|---|
| 808 | Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with MCC | 2.2079 | 5.2 days |
| 809 | Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CCThis page | 1.2659 | 3.3 days |
| 810 | Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders without CC/MCC | 1.0466 | 2.6 days |
Linked ICD-10-CM Diagnosis Mappings
- D59.0
Drug-induced autoimmune hemolytic anemia
BillableChapter 3 - D59.10
Autoimmune hemolytic anemia, unspecified
BillableChapter 3 - D59.11
Warm autoimmune hemolytic anemia
BillableChapter 3 - D59.12
Cold autoimmune hemolytic anemia
BillableChapter 3 - D59.13
Mixed type autoimmune hemolytic anemia
BillableChapter 3 - D59.19
Other autoimmune hemolytic anemia
BillableChapter 3 - D59.2
Drug-induced nonautoimmune hemolytic anemia
BillableChapter 3 - D59.4
Other nonautoimmune hemolytic anemias
BillableChapter 3 - D59.5
Paroxysmal nocturnal hemoglobinuria [Marchiafava-Micheli]
BillableChapter 3 - D59.6
Hemoglobinuria due to hemolysis from other external causes
BillableChapter 3 - D59.8
Other acquired hemolytic anemias
BillableChapter 3 - D59.9
Acquired hemolytic anemia, unspecified
BillableChapter 3 - D60.0
Chronic acquired pure red cell aplasia
BillableChapter 3 - D60.1
Transient acquired pure red cell aplasia
BillableChapter 3 - D60.8
Other acquired pure red cell aplasias
BillableChapter 3 - D60.9
Acquired pure red cell aplasia, unspecified
BillableChapter 3 - D61.01
Constitutional (pure) red blood cell aplasia
BillableChapter 3 - D61.02
Shwachman-Diamond syndrome
BillableChapter 3 - D61.03
Fanconi anemia
BillableChapter 3 - D61.09
Other constitutional aplastic anemia
BillableChapter 3 - D61.1
Drug-induced aplastic anemia
BillableChapter 3 - D61.2
Aplastic anemia due to other external agents
BillableChapter 3 - D61.3
Idiopathic aplastic anemia
BillableChapter 3 - D61.810
Antineoplastic chemotherapy induced pancytopenia
BillableChapter 3 - D61.811
Other drug-induced pancytopenia
BillableChapter 3 - D61.818
Other pancytopenia
BillableChapter 3 - D61.89
Other specified aplastic anemias and other bone marrow failure syndromes
BillableChapter 3 - D61.9
Aplastic anemia, unspecified
BillableChapter 3 - D70.0
Congenital agranulocytosis
BillableChapter 3 - D70.1
Agranulocytosis secondary to cancer chemotherapy
BillableChapter 3 - D70.2
Other drug-induced agranulocytosis
BillableChapter 3 - D70.3
Neutropenia due to infection
BillableChapter 3 - D70.4
Cyclic neutropenia
BillableChapter 3 - D70.8
Other neutropenia
BillableChapter 3 - D70.9
Neutropenia, unspecified
BillableChapter 3 - D71.1
Leukocyte adhesion deficiency
BillableChapter 3 - D71.8
Other functional disorders of polymorphonuclear neutrophils
BillableChapter 3 - D71.9
Functional disorders of polymorphonuclear neutrophils, unspecified
BillableChapter 3 - D72.0
Genetic anomalies of leukocytes
BillableChapter 3 - D80.6
Antibody deficiency with near-normal immunoglobulins or with hyperimmunoglobulinemia
BillableChapter 3 - D80.8
Other immunodeficiencies with predominantly antibody defects
BillableChapter 3 - D80.9
Immunodeficiency with predominantly antibody defects, unspecified
BillableChapter 3 - D81.0
Severe combined immunodeficiency [SCID] with reticular dysgenesis
BillableChapter 3 - D81.1
Severe combined immunodeficiency [SCID] with low T- and B-cell numbers
BillableChapter 3 - D81.2
Severe combined immunodeficiency [SCID] with low or normal B-cell numbers
BillableChapter 3 - D81.4
Nezelof's syndrome
BillableChapter 3 - D81.6
Major histocompatibility complex class I deficiency
BillableChapter 3 - D81.7
Major histocompatibility complex class II deficiency
BillableChapter 3 - D81.82
Activated Phosphoinositide 3-kinase Delta Syndrome [APDS]
BillableChapter 3 - D81.89
Other combined immunodeficiencies
BillableChapter 3 - D81.9
Combined immunodeficiency, unspecified
BillableChapter 3 - D82.0
Wiskott-Aldrich syndrome
BillableChapter 3 - D82.1
Di George's syndrome
BillableChapter 3 - D89.810
Acute graft-versus-host disease
BillableChapter 3 - D89.811
Chronic graft-versus-host disease
BillableChapter 3 - D89.812
Acute on chronic graft-versus-host disease
BillableChapter 3 - D89.813
Graft-versus-host disease, unspecified
BillableChapter 3 - I27.841
Fontan-associated lymphatic dysfunction
BillableChapter 9 - T86.00
Unspecified complication of bone marrow transplant
BillableChapter 19 - T86.01
Bone marrow transplant rejection
BillableChapter 19 - T86.02
Bone marrow transplant failure
BillableChapter 19 - T86.03
Bone marrow transplant infection
BillableChapter 19 - T86.09
Other complications of bone marrow transplant
BillableChapter 19