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ICD-10-CM Current in FY 2027

D56.4

Hereditary persistence of fetal hemoglobin [HPFH]

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where D56.4 sits in the official hierarchy. Each level is the code it is classified under.

  1. D56 Parent Thalassemia
  2. D56.4 This code Hereditary persistence of fetal hemoglobin [HPFH]

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Excludes1

sickle-cell thalassemia ( D57.4- )

Inherited from D56 — Thalassemia

Version History

How D56.4 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Hereditary persistence of fetal hemoglobin [HPFH]

  2. FY 2026 Effective

    Unchanged

    Hereditary persistence of fetal hemoglobin [HPFH]

Related Codes

Other codes under D56

Codes whose official notes reference D56.4

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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