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 | ✓ |
| E70.0 | Classical phenylketonuria | ✓ |
| E70.1 | Other hyperphenylalaninemias | ✓ |
| E70.1 | Other hyperphenylalaninemias | ✓ |
| E70.2 | Disorders of tyrosine metabolism | — |
| E70.2 | Disorders of tyrosine metabolism | — |
| E70.3 | Albinism | — |
| E70.3 | Albinism | — |
| E70.4 | Disorders of histidine metabolism | — |
| E70.4 | Disorders of histidine metabolism | — |
| E70.5 | Disorders of tryptophan metabolism | ✓ |
| E70.5 | Disorders of tryptophan metabolism | ✓ |
| E70.8 | Other disorders of aromatic amino-acid metabolism | — |
| E70.8 | Other disorders of aromatic amino-acid metabolism | — |
| E70.9 | Disorder of aromatic amino-acid metabolism, unspecified | ✓ |
| E70.9 | Disorder of aromatic amino-acid metabolism, unspecified | ✓ |
| E70.20 | Disorder of tyrosine metabolism, unspecified | ✓ |
| E70.20 | Disorder of tyrosine metabolism, unspecified | ✓ |
| E70.21 | Tyrosinemia | ✓ |
| E70.21 | Tyrosinemia | ✓ |
| E70.29 | Other disorders of tyrosine metabolism | ✓ |
| E70.29 | Other disorders of tyrosine metabolism | ✓ |
| E70.30 | Albinism, unspecified | ✓ |
| E70.30 | Albinism, unspecified | ✓ |
| E70.31 | Ocular albinism | — |
| E70.31 | Ocular albinism | — |
| E70.32 | Oculocutaneous albinism | — |
| E70.32 | Oculocutaneous albinism | — |
| E70.33 | Albinism with hematologic abnormality | — |
| E70.33 | Albinism with hematologic abnormality | — |
| E70.39 | Other specified albinism | ✓ |
| E70.39 | Other specified albinism | ✓ |
| E70.40 | Disorders of histidine metabolism, unspecified | ✓ |
| E70.40 | Disorders of histidine metabolism, unspecified | ✓ |
| E70.41 | Histidinemia | ✓ |
| E70.41 | Histidinemia | ✓ |
| E70.49 | Other disorders of histidine metabolism | ✓ |
| E70.49 | Other disorders of histidine metabolism | ✓ |
| E70.81 | Aromatic L-amino acid decarboxylase deficiency | ✓ |
| E70.81 | Aromatic L-amino acid decarboxylase deficiency | ✓ |
| E70.89 | Other disorders of aromatic amino-acid metabolism | ✓ |
| E70.89 | Other disorders of aromatic amino-acid metabolism | ✓ |
| E70.310 | X-linked ocular albinism | ✓ |
| E70.310 | X-linked ocular albinism | ✓ |
| E70.311 | Autosomal recessive ocular albinism | ✓ |
| E70.311 | Autosomal recessive ocular albinism | ✓ |
| E70.318 | Other ocular albinism | ✓ |
| E70.318 | Other ocular albinism | ✓ |
| E70.319 | Ocular albinism, unspecified | ✓ |
| E70.319 | Ocular albinism, unspecified | ✓ |
| E70.320 | Tyrosinase negative oculocutaneous albinism | ✓ |
| E70.320 | Tyrosinase negative oculocutaneous albinism | ✓ |
| E70.321 | Tyrosinase positive oculocutaneous albinism | ✓ |
| E70.321 | Tyrosinase positive oculocutaneous albinism | ✓ |
| E70.328 | Other oculocutaneous albinism | ✓ |
| E70.328 | Other oculocutaneous albinism | ✓ |
| E70.329 | Oculocutaneous albinism, unspecified | ✓ |
| E70.329 | Oculocutaneous albinism, unspecified | ✓ |
| E70.330 | Chediak-Higashi syndrome | ✓ |
| E70.330 | Chediak-Higashi syndrome | ✓ |
| E70.331 | Hermansky-Pudlak syndrome | ✓ |
| E70.331 | Hermansky-Pudlak syndrome | ✓ |
| E70.338 | Other albinism with hematologic abnormality | ✓ |
| E70.338 | Other albinism with hematologic abnormality | ✓ |
| E70.339 | Albinism with hematologic abnormality, unspecified | ✓ |
| E70.339 | Albinism with hematologic abnormality, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code E70?
E70 is an ICD-10-CM category covering Disorders of aromatic amino-acid metabolism. It contains 66 more specific diagnosis codes, 52 of which are billable.
Is E70 a billable code?
No — E70 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E70.0 — Classical phenylketonuria). 52 of the 66 codes under E70 are billable.
What codes fall under E70?
E70 includes E70.0, E70.0, E70.1, E70.1, E70.2, plus 61 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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