Home > 2010 ICD-9-CM Diagnosis Codes > Diseases Of The Nervous System And Sense Organs 320-389 > Diseases Of The Ear And Mastoid Process 380-389 > Disorders of external ear 380-
Specific code 2010 ICD-9-CM Diagnosis Code 380.21
Cholesteatoma of external ear
  • Short description: Cholesteatoma extern ear.
  • ICD-9-CM 380.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 380.21 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).
  • You are viewing the 2010 version of ICD-9-CM 380.21.
  • More recent version(s) of ICD-9-CM 380.21: 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 380.21 converts approximately to:
  • 2015/16 ICD-10-CM H60.40 Cholesteatoma of external ear, unspecified ear
Approximate Synonyms
  • Bilat external ear cholesteatoma
  • Bilat keratosis obturans of external ear canal
  • Bilateral cholesteatoma of external ears
  • Bilateral keratosis obturans of external ear canals
  • Both sides external ear cholesteatomas
  • Both sides keratosis obturans of external ear canal
  • Cholesteatoma external ear
  • External ear cholesteatoma
  • Keratosis obturans of external ear canal
  • Left cholesteatoma of external ear
  • Left external ear cholesteatoma
  • Left keratosis obturans of external ear canal
  • Right cholesteatoma of external ear
  • Right external ear cholesteatoma
  • Right keratosis obturans of external ear canal
380.21 Excludes
Applies To
  • Keratosis obturans of external ear (canal)
ICD-9-CM Volume 2 Index entries containing back-references to 380.21:
  • Cholesteatoma (ear) 385.30
    • external ear (canal) 380.21
  • Keratosis 701.1
    • obturans 380.21
 380.2 ICD9Data.com 380.22 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 380.21 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 2010 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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