D55
Anemia due to enzyme disorders
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
D50-D89chapter
Excludes2
- autoimmune disease (systemic) NOS (M35.9)M35.9
- certain conditions originating in the perinatal period (P00-P96)P00-P96
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- human immunodeficiency virus [HIV] disease (B20)B20
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes
No further instructional notes apply.
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 6
D55.0 Anemia due to glucose-6-phosphate dehydrogenase deficiency D55.1 Anemia due to other disorders of glutathione metabolism D55.2 Anemia due to disorders of glycolytic enzymes D55.3 Anemia due to disorders of nucleotide metabolism D55.8 Other anemias due to enzyme disorders D55.9 Anemia due to enzyme disorder, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.