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E70 vs E72

E70 (Disorders of aromatic amino-acid metabolism) compared with E72 (Other disorders of amino-acid metabolism), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Can these codes be reported together?

No — do not report together. E72 carries an Excludes1 note covering E70: “aromatic amino-acid metabolism (E70.-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

E70Disorders of aromatic amino-acid metabolismE72Other disorders of amino-acid metabolism
Billing statusNon-billable header

Report instead: E70.0, E70.1, E70.20, E70.21, E70.29

Non-billable header

Report instead: E72.00, E72.01, E72.02, E72.03, E72.04

ClassificationE00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89)E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89)
DefinitionDisorders of aromatic amino-acid metabolism is a non-billable ICD-10-CM category code (E70).Other disorders of amino-acid metabolism is a non-billable ICD-10-CM category code (E72).
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources