Specific code 2012 ICD-9-CM Diagnosis Code 446.5
Giant cell arteritis
  • ICD-9-CM 446.5 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 446.5 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2012 version of ICD-9-CM 446.5.
  • More recent version(s) of ICD-9-CM 446.5: 2013 2014.
Disease Synonyms
  • GIANT CELL ARTERITIS
  • Giant cell arteritis w polymyalgia rheumatica
  • Giant cell arteritis with polymyalgia rheumatica
Applies To
  • Cranial arteritis
  • Horton's disease
  • Temporal arteritis
Convert to ICD-10-CM: 446.5 converts approximately to:
  • 2014 ICD-10-CM M31.6 Other giant cell arteritis
ICD-9-CM Volume 2 Index entries containing back-references to 446.5:
  • Anarthritic rheumatoid disease 446.5
  • Arteritis 447.6
    • cranial (left) (right) 446.5
    • giant cell 446.5
    • temporal 446.5
  • Bagratuni's syndrome (temporal arteritis) 446.5
  • Disease, diseased - see also Syndrome
    • anarthritic rheumatoid 446.5
    • Horton's (temporal arteritis) 446.5
  • Horton's
    • disease (temporal arteritis) 446.5
  • Polymyalgia 725
    • arteritica 446.5
  • Rhizomelique, pseudopolyarthritic 446.5
  • Syndrome - see also Disease
    • Bagratuni's (temporal arteritis) 446.5
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 446.5 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 2012 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.