ICD-10-CM 2027
ICD-10 code for anemia
Confirmed by the official ICD-10-CM index entry “anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound)”. Page updated September 29, 2026.
About coding anemia
The ICD-10-CM code for anemia is D64.9 (Anemia, unspecified). The official index lists 25 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on D64.9.
Within D64, choose D64.9 (Anemia, unspecified) only when documentation doesn't support a more specific option: hereditary sideroblastic anemia (D64.0), secondary sideroblastic anemia due to disease (D64.1), secondary sideroblastic anemia due to drugs and toxins (D64.2), other sideroblastic anemias (D64.3), congenital dyserythropoietic anemia (D64.4) and other specified anemias (D64.8).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 811 (Red Blood Cell Disorders with MCC, relative weight 1.3988) and DRG 812 (Red Blood Cell Disorders without MCC, relative weight 0.9234), in MDC 16 (Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Related Anemia codes
- 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
- D51.0 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
- 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
- D63.0 Anemia in neoplastic disease
- D63.1 Anemia in chronic kidney disease
- D63.8 Anemia in other chronic diseases classified elsewhere
- 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
- D64.81 Anemia due to antineoplastic chemotherapy
- D64.89 Other specified anemias
Common questions about anemia ICD-10 codes
What is the ICD-10 code for anemia?
- D64.9 — Anemia, unspecified. More specific codes apply when the documentation supports them: D50.0, D50.1, D50.8, D50.9 and others below.
What is the ICD-10 code for iron deficiency anemia secondary to blood loss (chronic)?
- D50.0 — Iron deficiency anemia secondary to blood loss (chronic).
What is the ICD-10 code for sideropenic dysphagia?
- D50.1 — Sideropenic dysphagia.
What is the ICD-10 code for other iron deficiency anemias?
- D50.8 — Other iron deficiency anemias.
What is the ICD-10 code for iron deficiency anemia, unspecified?
- D50.9 — Iron deficiency anemia, unspecified.
What is the ICD-10 code for vitamin b12 deficiency anemia due to intrinsic factor deficiency?
- D51.0 — Vitamin B12 deficiency anemia due to intrinsic factor deficiency.
What is the ICD-10 code for vitamin b12 deficiency anemia due to selective vitamin b12 malabsorption with proteinuria?
- D51.1 — Vitamin B12 deficiency anemia due to selective vitamin B12 malabsorption with proteinuria.
Is D64.9 billable?
- Yes. D64.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D64.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D64.9 as a principal diagnosis.
Is D64.9 a CC or MCC?
- No. D64.9 is neither a CC nor an MCC under MS-DRG v44.0.