D55Header code — not billable
Anemia due to enzyme disorders
- Chapter
- 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- Category
- D55
- Effective date
- October 1, 2026
Related codes in category D55
D55.0Anemia due to glucose-6-phosphate dehydrogenase deficiencyYesD55.1Anemia due to other disorders of glutathione metabolismYesD55.2Anemia due to disorders of glycolytic enzymesD55.21Anemia due to pyruvate kinase deficiencyYesD55.29Anemia due to other disorders of glycolytic enzymesYesD55.3Anemia due to disorders of nucleotide metabolismYesD55.8Other anemias due to enzyme disordersYesD55.9Anemia due to enzyme disorder, unspecifiedYes
Frequently asked questions
What is ICD-10 code D55?
D55 is an ICD-10-CM diagnosis code for Anemia due to enzyme disorders.
Is D55 a billable code?
No. D55 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is D55 in?
D55 falls under Chapter 3: Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
When did D55 become effective?
D55 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to D55?
D55 belongs to category D55, which includes 8 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.