Specific code 2013 ICD-9-CM Diagnosis Code 491.1
Mucopurulent chronic bronchitis
  • Short description: Mucopurul chr bronchitis.
  • ICD-9-CM 491.1 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 491.1 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 491.1.
  • More recent version(s) of ICD-9-CM 491.1: 2014.
Disease Synonyms
  • Chronic bronchitis, mucopurulent
  • Mixed simple and mucopurulent chronic bronchitis
Applies To
  • Bronchitis (chronic) (recurrent):
    • fetid
    • mucopurulent
    • purulent
Convert to ICD-10-CM: 491.1 converts directly to:
  • 2014 ICD-10-CM J41.1 Mucopurulent chronic bronchitis
ICD-9-CM Volume 2 Index entries containing back-references to 491.1:
  • Bronchitis (diffuse) (hypostatic) (infectious) (inflammatory) (simple) 490
    • chronic 491.9
      • with
        • tracheitis (chronic) 491.8
      • asthmatic 493.2
      • catarrhal 491.0
      • chemical (due to fumes and vapors) 506.4
      • due to
        • fumes or vapors (chemical) (inhalation) 506.4
        • radiation 508.8
        • tobacco smoking 491.0
      • mucopurulent 491.1
      • obstructive 491.20
      • purulent 491.1
      • simple 491.0
      • specified type NEC 491.8
    • fetid (chronic) (recurrent) 491.1
    • mucopurulent (chronic) (recurrent) 491.1
    • pituitous 491.1
    • purulent (chronic) (recurrent) 491.1
      • acute or subacute 466.0
        • with bronchospasm or obstruction 466.0
    • putrid 491.1
    • suppurative (chronic) 491.1
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 491.1 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.