ICD-10-CM · Chapter 4 · E00-E89
E70 Disorders of aromatic amino-acid metabolism
Subcodes
Each subcode links to a detail page with full clinical annotations.
| Code | Description | Billable |
|---|---|---|
| E70..0 | Classical phenylketonuria | Yes |
| E70..1 | Other hyperphenylalaninemias | Yes |
| E70..2 | Disorders of tyrosine metabolism | No |
| E70..20 | Disorder of tyrosine metabolism, unspecified | Yes |
| E70..21 | Tyrosinemia | Yes |
| E70..29 | Other disorders of tyrosine metabolism | Yes |
| E70..3 | Albinism | No |
| E70..30 | Albinism, unspecified | Yes |
| E70..31 | Ocular albinism | No |
| E70..310 | X-linked ocular albinism | Yes |
| E70..311 | Autosomal recessive ocular albinism | Yes |
| E70..318 | Other ocular albinism | Yes |
| E70..319 | Ocular albinism, unspecified | Yes |
| E70..32 | Oculocutaneous albinism | No |
| E70..320 | Tyrosinase negative oculocutaneous albinism | Yes |
| E70..321 | Tyrosinase positive oculocutaneous albinism | Yes |
| E70..328 | Other oculocutaneous albinism | Yes |
| E70..329 | Oculocutaneous albinism, unspecified | Yes |
| E70..33 | Albinism with hematologic abnormality | No |
| E70..330 | Chediak-Higashi syndrome | Yes |
| E70..331 | Hermansky-Pudlak syndrome | Yes |
| E70..338 | Other albinism with hematologic abnormality | Yes |
| E70..339 | Albinism with hematologic abnormality, unspecified | Yes |
| E70..39 | Other specified albinism | Yes |
| E70..4 | Disorders of histidine metabolism | No |
| E70..40 | Disorders of histidine metabolism, unspecified | Yes |
| E70..41 | Histidinemia | Yes |
| E70..49 | Other disorders of histidine metabolism | Yes |
| E70..5 | Disorders of tryptophan metabolism | Yes |
| E70..8 | Other disorders of aromatic amino-acid metabolism | No |
| E70..81 | Aromatic L-amino acid decarboxylase deficiency | Yes |
| E70..89 | Other disorders of aromatic amino-acid metabolism | Yes |
| E70..9 | Disorder of aromatic amino-acid metabolism, unspecified | Yes |
Last reviewed: September 2026