2026 ICD-10-CM Diagnosis Code E70Disorders of aromatic amino-acid metabolism

ICD-10-CM Codes›E00–E89›E70-E88›E70

ICD-10-CM E70
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E70 is a non-billable ICD-10-CM category code for disorders of aromatic amino-acid metabolism, so it cannot be submitted on claims. Use a more specific code from this category instead, such as E70.0, E70.1, E70.20, and E70.21.

Code Identity

ICD-10-CM Code
E70
Billable Status
No — Non-Billable Category
Code Describes
Disorders of aromatic amino-acid metabolism
Chapter
E70-E88
Metabolic disorders

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE70-E88Metabolic disorders
CategoryE70Disorders of aromatic amino-acid metabolism
This CodeE70Disorders of aromatic amino-acid metabolism

Specific Coding for Disorders of aromatic amino-acid metabolismOverview

Non-specific codes like E70 require more characters. Use one of these billable codes instead:

  • Use E70.0 for Classical phenylketonuria

  • Use E70.1 for Other hyperphenylalaninemias

  • E70.2 for Disorders of tyrosine metabolism

  • Use E70.20 for Disorder of tyrosine metabolism, unspecified

  • Use E70.21 for Tyrosinemia

  • Use E70.29 for Other disorders of tyrosine metabolism

  • E70.3 for Albinism

  • Use E70.30 for Albinism, unspecified

  • E70.31 for Ocular albinism

  • E70.32 for Oculocutaneous albinism

  • E70.33 for Albinism with hematologic abnormality

  • Use E70.39 for Other specified albinism

  • E70.4 for Disorders of histidine metabolism

  • Use E70.40 for Disorders of histidine metabolism, unspecified

  • Use E70.41 for Histidinemia

  • Use E70.49 for Other disorders of histidine metabolism

  • Use E70.5 for Disorders of tryptophan metabolism

  • E70.8 for Other disorders of aromatic amino-acid metabolism

  • Use E70.81 for Aromatic L-amino acid decarboxylase deficiency

  • Use E70.89 for Other disorders of aromatic amino-acid metabolism

  • Use E70.9 for Disorder of aromatic amino-acid metabolism, unspecified

Patient EducationClinical

Metabolic Disorders

Metabolism is the process your body uses to get or make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system break the food parts down into sugars and acids, your body's fuel.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E70Overview

Is E70 (Disorders of aromatic amino-acid metabolism) a billable code?

No. This is a category header that groups the codes for disorders of aromatic amino-acid metabolism, and headers cannot be submitted on claims. Claims for disorders of aromatic amino-acid metabolism need a more specific code from this category, such as E70.0, E70.1, and E70.20.