2006 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.* > 2006 ICD-9-CM Diagnosis 270.4 Disturbances of sulphur-bearing amino-acid metabolism View the most recent version of ICD-9-CM 270.4 An autosomal recessive inborn error of methionine metabolism usually caused by a deficiency of CYSTATHIONINE BETA-SYNTHASE and associated with elevations of homocysteine in plasma and urine. Clinical features include a tall, slender habitus, SCOLIOSIS, arachnodactyly, MUSCLE WEAKNESS, genu varis, thin blond hair, malar flush, lens dislocations, an increased incidence of MENTAL RETARDATION, and a tendency to develop fibrosis of arteries, frequently complicated by CEREBROVASCULAR ACCIDENTS and MYOCARDIAL INFARCTION. 270.4 is a specific code that can be used to specify a diagnosis 270.4 contains 13 index entries View the ICD-9-CM Volume 1 270.* hierarchy Alternate Terminology Cystathioninemia Cystathioninuria Disturbances of metabolism of methionine, homocystine, and cystathionine Homocystinuria Hypermethioninemia Methioninemia  Index entries containing 270.4: Cystathioninemia 270.4 Cystathioninuria 270.4 Disorder - see also Disease amino acid (metabolic) (see also Disturbance, metabolism, amino acid) 270.9 cystathioninuria 270.4 homocystinuria 270.4 Disturbance - see also Disease metabolism (acquired) (congenital) (see also Disorder, metabolism) 277.9 amino acid (see also Disorder, amino acid) 270.9 sulfur-bearing 270.4 cystathionine 270.4 homocystine 270.4 methionine 270.4 Homocystinemia 270.4 Homocystinuria 270.4 Hypermethioninemia 270.4 Malabsorption 579.9 methionine 270.4 Methioninemia 270.4