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