2013 ICD-9-CM Diagnosis Code 270.4
Disturbances of sulphur-bearing amino-acid metabolism
- 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.
- ICD-9-CM 270.4 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Applies To
Convert 270.4 to ICD-10-CM 
ICD-9-CM Volume 2 Index entries containing back-references to 270.4:
methylenetetrahydrofolate reductase (MTHFR) 
albinism 
