Specific code 2013 ICD-9-CM Diagnosis Code 173.21
Basal cell carcinoma of skin of ear and external auditory canal
  • Short description: Basal cell ca skin ear.
  • ICD-9-CM 173.21 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 173.21 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2013 version of ICD-9-CM 173.21.
  • More recent version(s) of ICD-9-CM 173.21: 2014.
Disease Synonyms
  • Basal cell carcinoma of auricle of ear
  • Basal cell carcinoma of ear
  • Basal cell carcinoma of external auditory canal
  • Basal cell carcinoma, auricle
  • Basal cell carcinoma, ear
  • Basal cell carcinoma, external auditory canal
  • Cancer of the auricle of ear, basal cell
  • Cancer of the ext auditory canal, basal cell
  • Cancer of the skin of ear, basal cell
Convert to ICD-10-CM: 173.21 converts approximately to:
  • 2014 ICD-10-CM C44.211 Basal cell carcinoma of skin of unspecified ear and external auricular canal
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 173.21 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 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.