2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Other Metabolic Disorders And Immunity Disorders 270-279 > Disorders Of Amino-Acid Transport And Metabolism 270.* > 2008 ICD-9-CM Diagnosis 270.9 Unspecified disorder of amino-acid metabolism  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 270.9 can be accessed here. Disorders affecting amino acid metabolism. The majority of these disorders are inherited and present in the neonatal period with metabolic disturbances (e.g., ACIDOSIS) and neurologic manifestations. They are present at birth, although they may not become symptomatic until later in life. 270.9 is a specific code that can be used to specify a diagnosis 270.9 contains 12 index entries View the ICD-9-CM Volume 1 270.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 270.9: Acid deficiency amino 270.9 Aciduria 791.9 organic 270.9 Amino acid deficiency 270.9 anemia 281.4 metabolic disorder (see also Disorder, amino acid) 270.9 Aminoaciduria 270.9 imidazole 270.5 Deficiency, deficient amino acid 270.9 Disorder - see also Disease amino acid (metabolic) (see also Disturbance, metabolism, amino acid) 270.9 albinism 270.2 alkaptonuria 270.2 argininosuccinicaciduria 270.6 beta-amino-isobutyricaciduria 277.2 cystathioninuria 270.4 cystinosis 270.0 cystinuria 270.0 glycinuria 270.0 homocystinuria 270.4 imidazole 270.5 maple syrup (urine) disease 270.3 neonatal, transitory 775.89 oasthouse urine disease 270.2 ochronosis 270.2 phenylketonuria 270.1 phenylpyruvic oligophrenia 270.1 purine NEC 277.2 pyrimidine NEC 277.2 renal transport NEC 270.0 specified type NEC 270.8 transport NEC 270.0 renal 270.0 xanthinuria 277.2 metabolism NEC 277.9 amino acid (see also Disorder, amino acid) 270.9 specified type NEC 270.8 nitrogen 270.9 Disturbance - see also Disease amino acid (metabolic) (see also Disorder, amino acid) 270.9 imidazole 270.5 maple syrup (urine) disease 270.3 transport 270.0 metabolism (acquired) (congenital) (see also Disorder, metabolism) 277.9 amino acid (see also Disorder, amino acid) 270.9 aromatic NEC 270.2 branched-chain 270.3 specified type NEC 270.8 straight-chain NEC 270.7 sulfur-bearing 270.4 transport 270.0 Hyperaminoaciduria 270.9 arginine 270.6 citrulline 270.6 cystine 270.0 glycine 270.0 lysine 270.7 ornithine 270.6 renal (types I, II, III) 270.0