D55
ICD-10Non-billable categoryAnemia due to enzyme disorders
Official ICD-10-CM descriptor (FY2026)
Anemia due to enzyme disorders
D55 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- drug-induced enzyme deficiency anemia (D59.2)
More specific codes under D55
- D55.0Anemia due to glucose-6-phosphate dehydrogenase deficiency
- D55.1Anemia due to other disorders of glutathione metabolism
- D55.2Anemia due to disorders of glycolytic enzymescategory
- D55.3Anemia due to disorders of nucleotide metabolism
- D55.8Other anemias due to enzyme disorders
- D55.9Anemia due to enzyme disorder, unspecified
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.