|  E70 |  | Disorders of aromatic amino-acid metabolism   | 
|  |  | 
	
		|  E70.0 |  | Classical phenylketonuria |  | 
|  |  | 
	
		|  E70.1 |  | Other hyperphenylalaninemias |  | 
|  |  | 
	
		|  E70.2 |  | Disorders of tyrosine metabolism |  
		|  |  | 
	
		| Excludes1 | transitory tyrosinemia of newborn (P74.5) 
 |  |  |  |  | 
	
		|  E70.20 |  | Disorder of tyrosine metabolism, unspecified |  |  |  |  | 
	
		|  E70.21 |  | Tyrosinemia |  
		|  |  |  |  |  |  |  | 
	
		|  E70.29 |  | Other disorders of tyrosine metabolism |  
		|  |  |  |  |  | 
|  |  | 
	
		|  E70.3 |  | Albinism |  |  |  | 
	
		|  E70.30 |  | Albinism, unspecified |  |  |  |  | 
	
		|  E70.31 |  | Ocular albinism |  |  |  | 
	
		|  E70.310 |  | X-linked ocular albinism |  |  |  |  | 
	
		|  E70.311 |  | Autosomal recessive ocular albinism |  |  |  |  | 
	
		|  E70.318 |  | Other ocular albinism |  |  |  |  | 
	
		|  E70.319 |  | Ocular albinism, unspecified |  |  |  |  |  | 
	
		|  E70.32 |  | Oculocutaneous albinism |  
		|  |  | 
	
		| Excludes1 | Chediak-Higashi syndrome (E70.330) Hermansky-Pudlak syndrome (E70.331)
 
 |  |  |  |  | 
	
		|  E70.320 |  | Tyrosinase negative oculocutaneous albinism |  
		|  |  | 
| Albinism I |  | Oculocutaneous albinism ty-neg |  |  |  |  |  | 
	
		|  E70.321 |  | Tyrosinase positive oculocutaneous albinism |  
		|  |  | 
| Albinism II |  | Oculocutaneous albinism ty-pos |  |  |  |  |  | 
	
		|  E70.328 |  | Other oculocutaneous albinism |  
		|  |  |  |  |  |  |  | 
	
		|  E70.329 |  | Oculocutaneous albinism, unspecified |  |  |  |  |  | 
	
		|  E70.33 |  | Albinism with hematologic abnormality |  |  |  | 
	
		|  E70.330 |  | Chediak-Higashi syndrome |  |  |  |  | 
	
		|  E70.331 |  | Hermansky-Pudlak syndrome |  |  |  |  | 
	
		|  E70.338 |  | Other albinism with hematologic abnormality |  |  |  |  | 
	
		|  E70.339 |  | Albinism with hematologic abnormality, unspecified |  |  |  |  |  | 
	
		|  E70.39 |  | Other specified albinism |  
		|  |  |  |  |  | 
|  |  | 
	
		|  E70.4 |  | Disorders of histidine metabolism |  |  |  | 
	
		|  E70.40 |  | Disorders of histidine metabolism, unspecified |  |  |  |  | 
	
		|  E70.41 |  | Histidinemia |  |  |  |  | 
	
		|  E70.49 |  | Other disorders of histidine metabolism |  |  | 
|  |  | 
	
		|  E70.5 |  | Disorders of tryptophan metabolism |  | 
|  |  | 
	
		|  E70.8 |  | Other disorders of aromatic amino-acid metabolism |  |  |  | 
	
		|  E70.81 |  | Aromatic L-amino acid decarboxylase deficiency |  
		|  |  |  |  |  |  |  | 
	
		|  E70.89 |  | Other disorders of aromatic amino-acid metabolism |  |  | 
|  |  | 
	
		|  E70.9 |  | Disorder of aromatic amino-acid metabolism, unspecified |  |