D56.4
Billable codeHereditary persistence of fetal hemoglobin [HPFH]
The ICD-10 code for hereditary persistence of fetal hemoglobin [hpfh] is D56.4.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- D56.0Alpha thalassemia
- D56.1Beta thalassemia
- D56.2Delta-beta thalassemia
- D56.3Thalassemia minor
- D56.5Hemoglobin E-beta thalassemia
- D56.8Other thalassemias
- D56.9Thalassemia, unspecified
- D56.4Hereditary persistence of fetal hemoglobin [HPFH]
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 2827Approximate match
Associated MS-DRGs
D56.4 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.