E70: Disorders of aromatic amino-acid metabolism

Codes under E70 (Disorders of aromatic amino-acid metabolism). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
E70.0	Classical phenylketonuria	✓
E70.1	Other hyperphenylalaninemias	✓
E70.2	Disorders of tyrosine metabolism	—
E70.3	Albinism	—
E70.4	Disorders of histidine metabolism	—
E70.5	Disorders of tryptophan metabolism	✓
E70.8	Other disorders of aromatic amino-acid metabolism	—
E70.9	Disorder of aromatic amino-acid metabolism, unspecified	✓
E70.20	Disorder of tyrosine metabolism, unspecified	✓
E70.21	Tyrosinemia	✓
E70.29	Other disorders of tyrosine metabolism	✓
E70.30	Albinism, unspecified	✓
E70.31	Ocular albinism	—
E70.32	Oculocutaneous albinism	—
E70.33	Albinism with hematologic abnormality	—
E70.39	Other specified albinism	✓
E70.40	Disorders of histidine metabolism, unspecified	✓
E70.41	Histidinemia	✓
E70.49	Other disorders of histidine metabolism	✓
E70.81	Aromatic L-amino acid decarboxylase deficiency	✓
E70.89	Other disorders of aromatic amino-acid metabolism	✓
E70.310	X-linked ocular albinism	✓
E70.311	Autosomal recessive ocular albinism	✓
E70.318	Other ocular albinism	✓
E70.319	Ocular albinism, unspecified	✓
E70.320	Tyrosinase negative oculocutaneous albinism	✓
E70.321	Tyrosinase positive oculocutaneous albinism	✓
E70.328	Other oculocutaneous albinism	✓
E70.329	Oculocutaneous albinism, unspecified	✓
E70.330	Chediak-Higashi syndrome	✓
E70.331	Hermansky-Pudlak syndrome	✓
E70.338	Other albinism with hematologic abnormality	✓
E70.339	Albinism with hematologic abnormality, unspecified	✓

More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees

Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

Code the diagnosis right