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  3. Diagnosis Codes in MS-DRG 812 - Red Blood Cell Disorders Without MCC

Diagnosis Codes in MS-DRG 812 - Red Blood Cell Disorders Without MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Red Blood Cell Disorders without MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 812

MS-DRG Title: Red Blood Cell Disorders without MCC

MCD: 16

Relative Weight: 0.9229 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Geometric LOS: 0.92 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.

Arithmetic LOS: 2.80 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

  1. D46 - Myelodysplastic syndromes
  2. D46.2 - Refractory anemia with excess of blasts [RAEB]
  3. D50 - Iron deficiency anemia
  4. D51 - Vitamin B12 deficiency anemia
  5. D52 - Folate deficiency anemia
  6. D53 - Other nutritional anemias
  7. D55 - Anemia due to enzyme disorders
  8. D55.2 - Anemia due to disorders of glycolytic enzymes
  9. D56 - Thalassemia
  10. D57 - Sickle-cell disorders
  11. D57.0 - Hb-SS disease with crisis
  12. D57.2 - Sickle-cell/Hb-C disease
  13. D57.21 - Sickle-cell/Hb-C disease with crisis
  14. D57.4 - Sickle-cell thalassemia
  15. D57.41 - Sickle-cell thalassemia, unspecified, with crisis
  16. D57.43 - Sickle-cell thalassemia beta zero with crisis
  17. D57.45 - Sickle-cell thalassemia beta plus with crisis
  18. D57.8 - Other sickle-cell disorders
  19. D57.81 - Other sickle-cell disorders with crisis
  20. D58 - Other hereditary hemolytic anemias
  21. D59.3 - Hemolytic-uremic syndrome
  22. D63 - Anemia in chronic diseases classified elsewhere
  23. D64 - Other anemias
  24. D64.8 - Other specified anemias
  25. D74 - Methemoglobinemia
  26. R71 - Abnormality of red blood cells
  27. T80.30 - ABO incompatibility reaction due to transfusion of
  28. T80.310 - ABO incompatibility with acute hemolytic transfusi
  29. T80.311 - ABO incompatibility with delayed hemolytic transfu
  30. T80.319 - ABO incompatibility with hemolytic transfusion rea
  31. T80.39 - Other ABO incompatibility reaction due to transfusi
  32. T80.40 - Rh incompatibility reaction due to transfusion of b
  33. T80.410 - Rh incompatibility with acute hemolytic transfusio
  34. T80.411 - Rh incompatibility with delayed hemolytic transfus
  35. T80.419 - Rh incompatibility with hemolytic transfusion reac
  36. T80.49 - Other Rh incompatibility reaction due to transfusio
  37. T80.89 - Other complications following infusion, transfusion
  38. T80.910 - Acute hemolytic transfusion reaction, unspecified
  39. T80.911 - Delayed hemolytic transfusion reaction, unspecifie
  40. T80.919 - Hemolytic transfusion reaction, unspecified incomp
  41. T80.92 - Unspecified transfusion reaction
  42. T80.A0 - Non-ABO incompatibility reaction due to transfusion
  43. T80.A10 - Non-ABO incompatibility with acute hemolytic trans
  44. T80.A11 - Non-ABO incompatibility with delayed hemolytic tra
  45. T80.A19 - Non-ABO incompatibility with hemolytic transfusion
  46. T80.A9 - Other non-ABO incompatibility reaction due to trans

  • -

    • D62 - Acute posthemorrhagic anemia

  • D46 - Myelodysplastic syndromes

    • D46.0 - Refractory anemia without ring sideroblasts, so stated

    • D46.1 - Refractory anemia with ring sideroblasts

    • D46.4 - Refractory anemia, unspecified

    • D46.9 - Myelodysplastic syndrome, unspecified

    • D46.A - Refractory cytopenia with multilineage dysplasia

    • D46.B - Refractory cytopenia with multilineage dysplasia and ring sideroblasts

    • D46.C - Myelodysplastic syndrome with isolated del(5q) chromosomal abnormality

    • D46.Z - Other myelodysplastic syndromes

  • D46.2 - Refractory anemia with excess of blasts [RAEB]

    • D46.20 - Refractory anemia with excess of blasts, unspecified

    • D46.21 - Refractory anemia with excess of blasts 1

    • D46.22 - Refractory anemia with excess of blasts 2

  • D50 - Iron deficiency anemia

    • D50.0 - Iron deficiency anemia secondary to blood loss (chronic)

    • D50.1 - Sideropenic dysphagia

    • D50.8 - Other iron deficiency anemias

    • D50.9 - Iron deficiency anemia, unspecified

  • D51 - Vitamin B12 deficiency anemia

    • D51.0 - Vitamin B12 deficiency anemia due to intrinsic factor deficiency

    • D51.1 - Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria

    • D51.2 - Transcobalamin II deficiency

    • D51.3 - Other dietary vitamin B12 deficiency anemia

    • D51.8 - Other vitamin B12 deficiency anemias

    • D51.9 - Vitamin B12 deficiency anemia, unspecified

  • D52 - Folate deficiency anemia

    • D52.0 - Dietary folate deficiency anemia

    • D52.1 - Drug-induced folate deficiency anemia

    • D52.8 - Other folate deficiency anemias

    • D52.9 - Folate deficiency anemia, unspecified

  • D53 - Other nutritional anemias

    • D53.0 - Protein deficiency anemia

    • D53.1 - Other megaloblastic anemias, not elsewhere classified

    • D53.2 - Scorbutic anemia

    • D53.8 - Other specified nutritional anemias

    • D53.9 - Nutritional anemia, unspecified

  • D55 - Anemia due to enzyme disorders

    • D55.0 - Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiency

    • D55.1 - Anemia due to other disorders of glutathione metabolism

    • D55.3 - Anemia due to disorders of nucleotide metabolism

    • D55.8 - Other anemias due to enzyme disorders

    • D55.9 - Anemia due to enzyme disorder, unspecified

  • D55.2 - Anemia due to disorders of glycolytic enzymes

    • D55.21 - Anemia due to pyruvate kinase deficiency

    • D55.29 - Anemia due to other disorders of glycolytic enzymes

  • D56 - Thalassemia

    • D56.0 - Alpha thalassemia

    • D56.1 - Beta thalassemia

    • D56.2 - Delta-beta thalassemia

    • D56.3 - Thalassemia minor

    • D56.4 - Hereditary persistence of fetal hemoglobin [HPFH]

    • D56.5 - Hemoglobin E-beta thalassemia

    • D56.8 - Other thalassemias

    • D56.9 - Thalassemia, unspecified

  • D57 - Sickle-cell disorders

    • D57.1 - Sickle-cell disease without crisis

    • D57.3 - Sickle-cell trait

  • D57.0 - Hb-SS disease with crisis

    • D57.00 - Hb-SS disease with crisis, unspecified

    • D57.01 - Hb-SS disease with acute chest syndrome

    • D57.02 - Hb-SS disease with splenic sequestration

    • D57.03 - Hb-SS disease with cerebral vascular involvement

    • D57.04 - Hb-SS disease with dactylitis

    • D57.09 - Hb-SS disease with crisis with other specified complication

  • D57.2 - Sickle-cell/Hb-C disease

    • D57.20 - Sickle-cell/Hb-C disease without crisis

  • D57.21 - Sickle-cell/Hb-C disease with crisis

    • D57.211 - Sickle-cell/Hb-C disease with acute chest syndrome

    • D57.212 - Sickle-cell/Hb-C disease with splenic sequestration

    • D57.213 - Sickle-cell/Hb-C disease with cerebral vascular involvement

    • D57.214 - Sickle-cell/Hb-C disease with dactylitis

    • D57.218 - Sickle-cell/Hb-C disease with crisis with other specified complication

    • D57.219 - Sickle-cell/Hb-C disease with crisis, unspecified

  • D57.4 - Sickle-cell thalassemia

    • D57.40 - Sickle-cell thalassemia without crisis

    • D57.42 - Sickle-cell thalassemia beta zero without crisis

    • D57.44 - Sickle-cell thalassemia beta plus without crisis

  • D57.41 - Sickle-cell thalassemia, unspecified, with crisis

    • D57.411 - Sickle-cell thalassemia, unspecified, with acute chest syndrome

    • D57.412 - Sickle-cell thalassemia, unspecified, with splenic sequestration

    • D57.413 - Sickle-cell thalassemia, unspecified, with cerebral vascular involvement

    • D57.414 - Sickle-cell thalassemia, unspecified, with dactylitis

    • D57.418 - Sickle-cell thalassemia, unspecified, with crisis with other specified complication

    • D57.419 - Sickle-cell thalassemia, unspecified, with crisis

  • D57.43 - Sickle-cell thalassemia beta zero with crisis

    • D57.431 - Sickle-cell thalassemia beta zero with acute chest syndrome

    • D57.432 - Sickle-cell thalassemia beta zero with splenic sequestration

    • D57.433 - Sickle-cell thalassemia beta zero with cerebral vascular involvement

    • D57.434 - Sickle-cell thalassemia beta zero with dactylitis

    • D57.438 - Sickle-cell thalassemia beta zero with crisis with other specified complication

    • D57.439 - Sickle-cell thalassemia beta zero with crisis, unspecified

  • D57.45 - Sickle-cell thalassemia beta plus with crisis

    • D57.451 - Sickle-cell thalassemia beta plus with acute chest syndrome

    • D57.452 - Sickle-cell thalassemia beta plus with splenic sequestration

    • D57.453 - Sickle-cell thalassemia beta plus with cerebral vascular involvement

    • D57.454 - Sickle-cell thalassemia beta plus with dactylitis

    • D57.458 - Sickle-cell thalassemia beta plus with crisis with other specified complication

    • D57.459 - Sickle-cell thalassemia beta plus with crisis, unspecified

  • D57.8 - Other sickle-cell disorders

    • D57.80 - Other sickle-cell disorders without crisis

  • D57.81 - Other sickle-cell disorders with crisis

    • D57.811 - Other sickle-cell disorders with acute chest syndrome

    • D57.812 - Other sickle-cell disorders with splenic sequestration

    • D57.813 - Other sickle-cell disorders with cerebral vascular involvement

    • D57.814 - Other sickle-cell disorders with dactylitis

    • D57.818 - Other sickle-cell disorders with crisis with other specified complication

    • D57.819 - Other sickle-cell disorders with crisis, unspecified

  • D58 - Other hereditary hemolytic anemias

    • D58.0 - Hereditary spherocytosis

    • D58.1 - Hereditary elliptocytosis

    • D58.2 - Other hemoglobinopathies

    • D58.8 - Other specified hereditary hemolytic anemias

    • D58.9 - Hereditary hemolytic anemia, unspecified

  • D59.3 - Hemolytic-uremic syndrome

    • D59.30 - Hemolytic-uremic syndrome, unspecified

    • D59.31 - Infection-associated hemolytic-uremic syndrome

    • D59.32 - Hereditary hemolytic-uremic syndrome

    • D59.39 - Other hemolytic-uremic syndrome

  • D63 - Anemia in chronic diseases classified elsewhere

    • D63.0 - Anemia in neoplastic disease

    • D63.1 - Anemia in chronic kidney disease

    • D63.8 - Anemia in other chronic diseases classified elsewhere

  • D64 - Other anemias

    • D64.0 - Hereditary sideroblastic anemia

    • D64.1 - Secondary sideroblastic anemia due to disease

    • D64.2 - Secondary sideroblastic anemia due to drugs and toxins

    • D64.3 - Other sideroblastic anemias

    • D64.4 - Congenital dyserythropoietic anemia

    • D64.9 - Anemia, unspecified

  • D64.8 - Other specified anemias

    • D64.81 - Anemia due to antineoplastic chemotherapy

    • D64.89 - Other specified anemias

  • D74 - Methemoglobinemia

    • D74.0 - Congenital methemoglobinemia

    • D74.8 - Other methemoglobinemias

    • D74.9 - Methemoglobinemia, unspecified

  • R71 - Abnormality of red blood cells

    • R71.0 - Precipitous drop in hematocrit

    • R71.8 - Other abnormality of red blood cells

  • T80.30 - ABO incompatibility reaction due to transfusion of blood or blood products, unspecified

    • T80.30XA - ABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter

  • T80.310 - ABO incompatibility with acute hemolytic transfusion reaction

    • T80.310A - ABO incompatibility with acute hemolytic transfusion reaction, initial encounter

  • T80.311 - ABO incompatibility with delayed hemolytic transfusion reaction

    • T80.311A - ABO incompatibility with delayed hemolytic transfusion reaction, initial encounter

  • T80.319 - ABO incompatibility with hemolytic transfusion reaction, unspecified

    • T80.319A - ABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter

  • T80.39 - Other ABO incompatibility reaction due to transfusion of blood or blood products

    • T80.39XA - Other ABO incompatibility reaction due to transfusion of blood or blood products, initial encounter

  • T80.40 - Rh incompatibility reaction due to transfusion of blood or blood products, unspecified

    • T80.40XA - Rh incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter

  • T80.410 - Rh incompatibility with acute hemolytic transfusion reaction

    • T80.410A - Rh incompatibility with acute hemolytic transfusion reaction, initial encounter

  • T80.411 - Rh incompatibility with delayed hemolytic transfusion reaction

    • T80.411A - Rh incompatibility with delayed hemolytic transfusion reaction, initial encounter

  • T80.419 - Rh incompatibility with hemolytic transfusion reaction, unspecified

    • T80.419A - Rh incompatibility with hemolytic transfusion reaction, unspecified, initial encounter

  • T80.49 - Other Rh incompatibility reaction due to transfusion of blood or blood products

    • T80.49XA - Other Rh incompatibility reaction due to transfusion of blood or blood products, initial encounter

  • T80.89 - Other complications following infusion, transfusion and therapeutic injection

    • T80.89XA - Other complications following infusion, transfusion and therapeutic injection, initial encounter

  • T80.910 - Acute hemolytic transfusion reaction, unspecified incompatibility

    • T80.910A - Acute hemolytic transfusion reaction, unspecified incompatibility, initial encounter

  • T80.911 - Delayed hemolytic transfusion reaction, unspecified incompatibility

    • T80.911A - Delayed hemolytic transfusion reaction, unspecified incompatibility, initial encounter

  • T80.919 - Hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed

    • T80.919A - Hemolytic transfusion reaction, unspecified incompatibility, unspecified as acute or delayed, initial encounter

  • T80.92 - Unspecified transfusion reaction

    • T80.92XA - Unspecified transfusion reaction, initial encounter

  • T80.A0 - Non-ABO incompatibility reaction due to transfusion of blood or blood products, unspecified

    • T80.A0XA - Non-ABO incompatibility reaction due to transfusion of blood or blood products, unspecified, initial encounter

  • T80.A10 - Non-ABO incompatibility with acute hemolytic transfusion reaction

    • T80.A10A - Non-ABO incompatibility with acute hemolytic transfusion reaction, initial encounter

  • T80.A11 - Non-ABO incompatibility with delayed hemolytic transfusion reaction

    • T80.A11A - Non-ABO incompatibility with delayed hemolytic transfusion reaction, initial encounter

  • T80.A19 - Non-ABO incompatibility with hemolytic transfusion reaction, unspecified

    • T80.A19A - Non-ABO incompatibility with hemolytic transfusion reaction, unspecified, initial encounter

  • T80.A9 - Other non-ABO incompatibility reaction due to transfusion of blood or blood products

    • T80.A9XA - Other non-ABO incompatibility reaction due to transfusion of blood or blood products, initial encounter