ICD-10-CM diagnosis code
E70.9 Disorder of aromatic amino-acid metabolism, unspecified
- Billable
- Yes, a complete code (FY2026)
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Other codes in E70
26 complete codes in this category.
- E70.330Chediak-Higashi syndrome
- E70.331Hermansky-Pudlak syndrome
- E70.338Other albinism with hematologic abnormality
- E70.339Albinism with hematologic abnormality, unspecified
- E70.39Other specified albinism
- E70.40Disorders of histidine metabolism, unspecified
- E70.41Histidinemia
- E70.49Other disorders of histidine metabolism
- E70.5Disorders of tryptophan metabolism
- E70.81Aromatic L-amino acid decarboxylase deficiency
- E70.89Other disorders of aromatic amino-acid metabolism
- E70.9Disorder of aromatic amino-acid metabolism, unspecified
Documentation tips
- Make sure the note supports every element of the title, “Disorder of aromatic amino-acid metabolism, unspecified”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to E70.
The international WHO ICD-10 also has E70.9, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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