Specific code 2015 ICD-9-CM Diagnosis Code 270.4
Disturbances of sulphur-bearing amino-acid metabolism
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 270.4 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 270.4 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 270.4 converts approximately to:
  • 2015/16 ICD-10-CM E72.10 Disorders of sulfur-bearing amino-acid metabolism, unspecified
  • 2015/16 ICD-10-CM E72.11 Homocystinuria
  • 2015/16 ICD-10-CM E72.19 Other disorders of sulfur-bearing amino-acid metabolism
Approximate Synonyms
  • 5,10-Methylenetetrahydrofolate reductase deficiency
  • Deficiency, methylenetetrahydrofolate reductase
  • Disorder of sulfur-bearing amino acid metabolism
  • Disorder of sulphur bearing amino acid metabolism
  • Heterozygous methylenetetrahydrofolate reductase mutation
  • Homocystinemia
  • Homocystinuria
  • Homozygous methylenetetrahydrofolate reductase mutation
  • Methylenetetrahydrofolate reductase deficiency
  • Methylenetetrahydrofolate reductase mutation
  • Sulphur bearing amino acid metabolism disorder
Clinical Information
  • 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
Applies To
  • Cystathioninemia
  • Cystathioninuria
  • Disturbances of metabolism of methionine, homocystine, and cystathionine
  • Homocystinuria
  • Hypermethioninemia
  • Methioninemia
ICD-9-CM Volume 2 Index entries containing back-references to 270.4:
  • Cystathioninemia 270.4
  • Cystathioninuria 270.4
  • Deficiency, deficient
    • methylenetetrahydrofolate reductase (MTHFR) 270.4
  • Disorder - see also Disease
    • amino acid (metabolic) (see also Disturbance, metabolism, amino acid) 270.9
  • Disturbance - see also Disease
  • Homocystinemia 270.4
  • Homocystinuria 270.4
  • Hypermethioninemia 270.4
  • Malabsorption 579.9
    • methionine 270.4
  • Methioninemia 270.4
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 270.4 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.