DRG 812
Medical DRGRed Blood Cell Disorders without MCC
What is MS-DRG 812?
MS-DRG 812 is a Medical Medicare Severity Diagnosis Related Group under Major Diagnostic Category 16 (MDC 16) without a significant Complication or Comorbidity. It maps to 134 ICD-10-CM diagnosis codes. For FY 2026 it carries a relative weight of 0.9182 with a geometric mean length of stay of 2.7 days and an arithmetic mean of 3.6 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 |
|---|---|---|---|
| 811 | Red Blood Cell Disorders with MCC | 1.4043 | 3.7 days |
| 812 | Red Blood Cell Disorders without MCCThis page | 0.9182 | 2.7 days |
Linked ICD-10-CM Diagnosis Mappings
- D46.0
Refractory anemia without ring sideroblasts, so stated
BillableChapter 2 - D46.1
Refractory anemia with ring sideroblasts
BillableChapter 2 - D46.20
Refractory anemia with excess of blasts, unspecified
BillableChapter 2 - D46.21
Refractory anemia with excess of blasts 1
BillableChapter 2 - D46.22
Refractory anemia with excess of blasts 2
BillableChapter 2 - D46.4
Refractory anemia, unspecified
BillableChapter 2 - D46.9
Myelodysplastic syndrome, unspecified
BillableChapter 2 - D46.A
Refractory cytopenia with multilineage dysplasia
BillableChapter 2 - D46.B
Refractory cytopenia with multilineage dysplasia and ring sideroblasts
BillableChapter 2 - D46.C
Myelodysplastic syndrome with isolated del(5q) chromosomal abnormality
BillableChapter 2 - D46.Z
Other myelodysplastic syndromes
BillableChapter 2 - D50.0
Iron deficiency anemia secondary to blood loss (chronic)
BillableChapter 3 - D50.1
Sideropenic dysphagia
BillableChapter 3 - D50.8
Other iron deficiency anemias
BillableChapter 3 - D50.9
Iron deficiency anemia, unspecified
BillableChapter 3 - D51.0
Vitamin B12 deficiency anemia due to intrinsic factor deficiency
BillableChapter 3 - D51.1
Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria
BillableChapter 3 - D51.2
Transcobalamin II deficiency
BillableChapter 3 - D51.3
Other dietary vitamin B12 deficiency anemia
BillableChapter 3 - D51.8
Other vitamin B12 deficiency anemias
BillableChapter 3 - D51.9
Vitamin B12 deficiency anemia, unspecified
BillableChapter 3 - D52.0
Dietary folate deficiency anemia
BillableChapter 3 - D52.1
Drug-induced folate deficiency anemia
BillableChapter 3 - D52.8
Other folate deficiency anemias
BillableChapter 3 - D52.9
Folate deficiency anemia, unspecified
BillableChapter 3 - D53.0
Protein deficiency anemia
BillableChapter 3 - D53.1
Other megaloblastic anemias, not elsewhere classified
BillableChapter 3 - D53.2
Scorbutic anemia
BillableChapter 3 - D53.8
Other specified nutritional anemias
BillableChapter 3 - D53.9
Nutritional anemia, unspecified
BillableChapter 3 - D55.0
Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency
BillableChapter 3 - D55.1
Anemia due to other disorders of glutathione metabolism
BillableChapter 3 - D55.21
Anemia due to pyruvate kinase deficiency
BillableChapter 3 - D55.29
Anemia due to other disorders of glycolytic enzymes
BillableChapter 3 - D55.3
Anemia due to disorders of nucleotide metabolism
BillableChapter 3 - D55.8
Other anemias due to enzyme disorders
BillableChapter 3 - D55.9
Anemia due to enzyme disorder, unspecified
BillableChapter 3 - D56.0
Alpha thalassemia
BillableChapter 3 - D56.1
Beta thalassemia
BillableChapter 3 - D56.2
Delta-beta thalassemia
BillableChapter 3 - D56.3
Thalassemia minor
BillableChapter 3 - D56.4
Hereditary persistence of fetal hemoglobin [HPFH]
BillableChapter 3 - D56.5
Hemoglobin E-beta thalassemia
BillableChapter 3 - D56.8
Other thalassemias
BillableChapter 3 - D56.9
Thalassemia, unspecified
BillableChapter 3 - D57.00
Hb-SS disease with crisis, unspecified
BillableChapter 3 - D57.01
Hb-SS disease with acute chest syndrome
BillableChapter 3 - D57.02
Hb-SS disease with splenic sequestration
BillableChapter 3 - D57.03
Hb-SS disease with cerebral vascular involvement
BillableChapter 3 - D57.04
Hb-SS disease with dactylitis
BillableChapter 3 - D57.09
Hb-SS disease with crisis with other specified complication
BillableChapter 3 - D57.1
Sickle-cell disease without crisis
BillableChapter 3 - D57.20
Sickle-cell/Hb-C disease without crisis
BillableChapter 3 - D57.211
Sickle-cell/Hb-C disease with acute chest syndrome
BillableChapter 3 - D57.212
Sickle-cell/Hb-C disease with splenic sequestration
BillableChapter 3 - D57.213
Sickle-cell/Hb-C disease with cerebral vascular involvement
BillableChapter 3 - D57.214
Sickle-cell/Hb-C disease with dactylitis
BillableChapter 3 - D57.218
Sickle-cell/Hb-C disease with crisis with other specified complication
BillableChapter 3 - D57.219
Sickle-cell/Hb-C disease with crisis, unspecified
BillableChapter 3 - D57.3
Sickle-cell trait
BillableChapter 3 - D57.40
Sickle-cell thalassemia without crisis
BillableChapter 3 - D57.411
Sickle-cell thalassemia, unspecified, with acute chest syndrome
BillableChapter 3 - D57.412
Sickle-cell thalassemia, unspecified, with splenic sequestration
BillableChapter 3 - D57.413
Sickle-cell thalassemia, unspecified, with cerebral vascular involvement
BillableChapter 3 - D57.414
Sickle-cell thalassemia, unspecified, with dactylitis
BillableChapter 3 - D57.418
Sickle-cell thalassemia, unspecified, with crisis with other specified complication
BillableChapter 3 - D57.419
Sickle-cell thalassemia, unspecified, with crisis
BillableChapter 3 - D57.42
Sickle-cell thalassemia beta zero without crisis
BillableChapter 3 - D57.431
Sickle-cell thalassemia beta zero with acute chest syndrome
BillableChapter 3 - D57.432
Sickle-cell thalassemia beta zero with splenic sequestration
BillableChapter 3 - D57.433
Sickle-cell thalassemia beta zero with cerebral vascular involvement
BillableChapter 3 - D57.434
Sickle-cell thalassemia beta zero with dactylitis
BillableChapter 3 - D57.438
Sickle-cell thalassemia beta zero with crisis with other specified complication
BillableChapter 3 - D57.439
Sickle-cell thalassemia beta zero with crisis, unspecified
BillableChapter 3 - D57.44
Sickle-cell thalassemia beta plus without crisis
BillableChapter 3 - D57.451
Sickle-cell thalassemia beta plus with acute chest syndrome
BillableChapter 3 - D57.452
Sickle-cell thalassemia beta plus with splenic sequestration
BillableChapter 3 - D57.453
Sickle-cell thalassemia beta plus with cerebral vascular involvement
BillableChapter 3 - D57.454
Sickle-cell thalassemia beta plus with dactylitis
BillableChapter 3 - D57.458
Sickle-cell thalassemia beta plus with crisis with other specified complication
BillableChapter 3 - D57.459
Sickle-cell thalassemia beta plus with crisis, unspecified
BillableChapter 3 - D57.80
Other sickle-cell disorders without crisis
BillableChapter 3 - D57.811
Other sickle-cell disorders with acute chest syndrome
BillableChapter 3 - D57.812
Other sickle-cell disorders with splenic sequestration
BillableChapter 3 - D57.813
Other sickle-cell disorders with cerebral vascular involvement
BillableChapter 3 - D57.814
Other sickle-cell disorders with dactylitis
BillableChapter 3 - D57.818
Other sickle-cell disorders with crisis with other specified complication
BillableChapter 3 - D57.819
Other sickle-cell disorders with crisis, unspecified
BillableChapter 3 - D58.0
Hereditary spherocytosis
BillableChapter 3 - D58.1
Hereditary elliptocytosis
BillableChapter 3 - D58.2
Other hemoglobinopathies
BillableChapter 3 - D58.8
Other specified hereditary hemolytic anemias
BillableChapter 3 - D58.9
Hereditary hemolytic anemia, unspecified
BillableChapter 3 - D59.30
Hemolytic-uremic syndrome, unspecified
BillableChapter 3 - D59.31
Infection-associated hemolytic-uremic syndrome
BillableChapter 3 - D59.32
Hereditary hemolytic-uremic syndrome
BillableChapter 3 - D59.39
Other hemolytic-uremic syndrome
BillableChapter 3 - D62
Acute posthemorrhagic anemia
BillableChapter 3 - D63.0
Anemia in neoplastic disease
BillableChapter 3 - D63.1
Anemia in chronic kidney disease
BillableChapter 3 - D63.8
Anemia in other chronic diseases classified elsewhere
BillableChapter 3 - D64.0
Hereditary sideroblastic anemia
BillableChapter 3 - D64.1
Secondary sideroblastic anemia due to disease
BillableChapter 3 - D64.2
Secondary sideroblastic anemia due to drugs and toxins
BillableChapter 3 - D64.3
Other sideroblastic anemias
BillableChapter 3 - D64.4
Congenital dyserythropoietic anemia
BillableChapter 3 - D64.81
Anemia due to antineoplastic chemotherapy
BillableChapter 3 - D64.89
Other specified anemias
BillableChapter 3 - D64.9
Anemia, unspecified
BillableChapter 3 - D74.0
Congenital methemoglobinemia
BillableChapter 3 - D74.8
Other methemoglobinemias
BillableChapter 3 - D74.9
Methemoglobinemia, unspecified
BillableChapter 3 - R71.0
Precipitous drop in hematocrit
BillableChapter 18 - R71.8
Other abnormality of red blood cells
BillableChapter 18 - T80.30XA
ABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
BillableChapter 19 - T80.310A
ABO incompatibility with acute hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.311A
ABO incompatibility with delayed hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.319A
ABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter
BillableChapter 19 - T80.39XA
Other ABO incompatibility reaction due to transfusion of blood or blood products, initial encounter
BillableChapter 19 - T80.40XA
Rh incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
BillableChapter 19 - T80.410A
Rh incompatibility with acute hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.411A
Rh incompatibility with delayed hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.419A
Rh incompatibility with hemolytic transfusion reaction, unspecified, initial encounter
BillableChapter 19 - T80.49XA
Other Rh incompatibility reaction due to transfusion of blood or blood products, initial encounter
BillableChapter 19 - T80.89XA
Other complications following infusion, transfusion and therapeutic injection, initial encounter
BillableChapter 19 - T80.910A
Acute hemolytic transfusion reaction, unspecified incompatibility, initial encounter
BillableChapter 19 - T80.911A
Delayed hemolytic transfusion reaction, unspecified incompatibility, initial encounter
BillableChapter 19 - T80.919A
Hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed, initial encounter
BillableChapter 19 - T80.92XA
Unspecified transfusion reaction, initial encounter
BillableChapter 19 - T80.A0XA
Non-ABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter
BillableChapter 19 - T80.A10A
Non-ABO incompatibility with acute hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.A11A
Non-ABO incompatibility with delayed hemolytic transfusion reaction, initial encounter
BillableChapter 19 - T80.A19A
Non-ABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter
BillableChapter 19 - T80.A9XA
Other non-ABO incompatibility reaction due to transfusion of blood or blood products, initial encounter
BillableChapter 19
