ICD-10-CM 2027 diagnosis code
D53.1Other megaloblastic anemias, not elsewhere classified
D53.1 is a valid, billable ICD-10-CM code for other megaloblastic anemias, not elsewhere classified. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Megaloblastic anemia.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About D53.1
D53.1 is the ICD-10-CM diagnosis code for other megaloblastic anemias, not elsewhere classified. It belongs to category D53 (other nutritional anemias), block D50-D53 (nutritional anemias) and chapter 3 (diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within D53, choose D53.1 (Other megaloblastic anemias, not elsewhere classified) only when documentation doesn't support a more specific option: protein deficiency anemia (D53.0), Scorbutic anemia (D53.2), other specified nutritional anemias (D53.8) and nutritional anemia, unspecified (D53.9).
Don't report D53.1 together with the conditions in its Excludes1 note: Di Guglielmo's disease (C94.0).
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.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 281.3 (other specified megaloblastic anemias not elsewhere classified).
Coding notes
- Megaloblastic anemia NOS
- Di Guglielmo's disease (C94.0)
Notes that apply from higher levels
Instructions written at a parent level also apply to D53.1.
› From D53 Other nutritional anemias
- megaloblastic anemia unresponsive to vitamin B12 or folate therapy
Broader instructions also apply from Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
Alphabetic index entries
11 entriesTerms in the official ICD-10-CM index that lead to D53.1.
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › achrestic
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › deficiency › combined B12 and folate
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › dimorphic
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › diphasic
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › megaloblastic
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › megaloblastic › combined B12 and folate deficiency
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › megaloblastic › refractory
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › megaloblastic › specified type NEC
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › megalocytic
- Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) › refractory › megaloblastic
- Megalocytic anemia
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 16 · Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders
ICD-9-CM equivalent
Converter →- 281.3Other specified megaloblastic anemias not elsewhere classifiedexact
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about D53.1
Is D53.1 billable?
- Yes. D53.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can D53.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict D53.1 as a principal diagnosis.
Is D53.1 a CC or MCC?
- No. D53.1 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does D53.1 group to?
- D53.1 is used in the MS-DRG v44.0 logic for MS-DRG 811 (Red Blood Cell Disorders with MCC) and MS-DRG 812 (Red Blood Cell Disorders without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for D53.1?
- The CMS General Equivalence Mappings map D53.1 to ICD-9-CM 281.3.