Specific code 2007 ICD-9-CM Diagnosis Code 491.0
Simple chronic bronchitis
  • Short description: SIMPLE CHR BRONCHITIS.
  • ICD-9-CM 491.0 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 491.0 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 2007 version of ICD-9-CM 491.0.
  • More recent version(s) of ICD-9-CM 491.0: 2008 2009 2010 2011 2012 2013 2014 2015.
Convert to ICD-10-CM: 491.0 converts directly to:
  • 2015/16 ICD-10-CM J41.0 Simple chronic bronchitis
Approximate Synonyms
  • Chronic bronchitis, simple
  • Mixed simple and mucopurulent chronic bronchitis
Applies To
  • Catarrhal bronchitis, chronic
  • Smokers' cough
ICD-9-CM Volume 2 Index entries containing back-references to 491.0:
  • Bronchitis (diffuse) (hypostatic) (infectious) (inflammatory) (simple) 490
    • catarrhal 490
      • acute - see Bronchitis, acute
      • chronic 491.0
    • 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
    • smokers' 491.0
  • Bronchorrhea (chronic) (purulent) 491.0
    • acute 466.0
      • with
        • asthma - see Asthma
        • bronchiolitis, acute 466.19
          • due to respiratory syncytial virus 466.11
        • bronchitis - see Bronchitis
        • chronic obstructive pulmonary disease (COPD) 496
        • emphysema - see Emphysema
          • due to external agent - see Condition, respiratory, acute, due to
      • acute 519.11
      • exercise induced 493.81
  • Catarrh, catarrhal (inflammation) (see also condition) 460
    • lung (see also Bronchitis) 490
    • pulmonary (see also Bronchitis) 490
  • Cough 786.2
    • smokers' 491.0
  • Smokers'
    • bronchitis 491.0
    • cough 491.0
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 491.0 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 2007 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.