What does ICD-10 code D55 mean?

ICD-10 code D55 is the standardized code used for anemia due to enzyme disorders in medical records and coding systems.

When is ICD-10 code D55 used?

Doctors, hospitals, and insurers may use ICD-10 code D55 when recording anemia due to enzyme disorders in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code D55 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code D55: Anemia due to enzyme disorders

Name: ICD-10 Code D55: Anemia due to enzyme disorders
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:04:19.001Z

D55 is an ICD-10 diagnosis entry used to group records related to Anemia due to enzyme disorders. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89).

When is it used?

May be used when a clinician documents anemia due to enzyme disorders in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)

block

D55-D59Hemolytic anemias

currentD55-D59

Official coding notes

Excludes1 (do not code together)

drug-induced enzyme deficiency anemia (D59.2)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

HematologistGeneral Physician

Sibling codes

D56Thalassemia D57Sickle-cell disorders D58Other hereditary hemolytic anemias D59Acquired hemolytic anemia

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

D55

Replacement codes

D55.0 — Anemia due to glucose-6-phosphate dehydrogenase [G6PD] deficiencyD55.1 — Anemia due to other disorders of glutathione metabolismD55.3 — Anemia due to disorders of nucleotide metabolismD55.8 — Other anemias due to enzyme disordersD55.9 — Anemia due to enzyme disorder, unspecified

Common synonyms

Anemia due to enzyme disorders

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.