270: Disorders of amino-acid transport and metabolism
Excludes:
abnormal findings without manifest disease (790.0-796.9)
disorders of purine and pyrimidine metabolism (277.1-277.2)
gout (274.00-274.9)
270.2 Other disturbances of aromatic amino-acid metabolism
Albinism
Alkaptonuria
Alkaptonuric ochronosis
Disturbances of metabolism of tyrosine and tryptophan
Homogentisic acid defects
Hydroxykynureninuria
Hypertyrosinemia
Indicanuria
Kynureninase defects
Oasthouse urine disease
Ochronosis
Tyrosinosis
Tyrosinuria
Waardenburg syndrome
Excludes:
vitamin B6-deficiency syndrome (266.1)

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