Specific code 2015 ICD-9-CM Diagnosis Code 270.5
Disturbances of histidine metabolism
  • 2015
  • Billable Code
  • ICD-9-CM 270.5 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 270.5 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Disorder of histidine metabolism
  • Histidine metabolism disease
  • Histidine metabolism disorder
  • Histidinemia
Clinical Information
  • Autosomal recessive aminoacidopathy due to deficiency of histidine ammonia-lyase; characterized by accumulation of histidine in serum and urinary excretion of histidine and metabolites, but is usually benign; may cause mild central nervous system dysfunction
Applies To
  • Carnosinemia
  • Histidinemia
  • Hyperhistidinemia
  • Imidazole aminoaciduria
Convert to ICD-10-CM: 270.5 converts approximately to:
  • 2015 ICD-10-CM E70.40 Disorders of histidine metabolism, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 270.5:
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 270.5 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.