OTHER METABOLIC AND IMMUNITY DISORDERS (270-279)
Use additional code to identify any associated intellectual disabilities
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)
270.0: Disturbances of amino-acid transport
Cystinosis
Cystinuria
Fanconi (-de Toni) (-Debré) syndrome
Glycinuria (renal)
Hartnup disease
270.1: Phenylketonuria [PKU]
Hyperphenylalaninemia
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)
270.3: Disturbances of branched-chain amino-acid metabolism
Disturbances of metabolism of leucine, isoleucine, and valine
Hypervalinemia
Intermittent branched-chain ketonuria
Leucine-induced hypoglycemia
Leucinosis
Maple syrup urine disease
270.4: Disturbances of sulphur-bearing amino-acid metabolism
Cystathioninemia
Cystathioninuria
Disturbances of metabolism of methionine, homocystine, and cystathionine
Homocystinuria
Hypermethioninemia
Methioninemia
270.5: Disturbances of histidine metabolism
Carnosinemia
Histidinemia
Hyperhistidinemia
Imidazole aminoaciduria
270.6: Disorders of urea cycle metabolism
Argininosuccinic aciduria
Citrullinemia
Disorders of metabolism of ornithine, citrulline, argininosuccinic acid, arginine, and ammonia
Hyperammonemia
Hyperornithinemia
270.7: Other disturbances of straight-chain amino-acid metabolism
Glucoglycinuria
Glycinemia (with methylmalonic acidemia)
Hyperglycinemia
Hyperlysinemia
Pipecolic acidemia
Saccharopinuria
Other disturbances of metabolism of glycine, threonine, serine, glutamine, and lysine
270.8: Other specified disorders of amino-acid metabolism
Alaninemia
Ethanolaminuria
Glycoprolinuria
Hydroxyprolinemia
Hyperprolinemia
Iminoacidopathy
Prolinemia
Prolinuria
Sarcosinemia
270.9: Unspecified disorder of amino-acid metabolism
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