Specific code 2012 ICD-9-CM Diagnosis Code 495.9
Unspecified allergic alveolitis and pneumonitis
  • Short description: Allerg alveol/pneum NOS.
  • ICD-9-CM 495.9 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 495.9 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 495.9.
  • More recent version(s) of ICD-9-CM 495.9: 2013 2014.
Disease Synonyms
  • Extrinsic allergic alveolitis
  • Hypersensitivity pneumonitis
Applies To
  • Alveolitis, allergic (extrinsic)
  • Hypersensitivity pneumonitis
Convert to ICD-10-CM: 495.9 converts directly to:
  • 2014 ICD-10-CM J67.9 Hypersensitivity pneumonitis due to unspecified organic dust
ICD-9-CM Volume 2 Index entries containing back-references to 495.9:
  • Allergy, allergic (reaction) 995.3
    • alveolitis (extrinsic) 495.9
      • due to
        • Aspergillus clavatus 495.4
        • cryptostroma corticale 495.6
        • organisms (fungal, thermophilic actinomycete, other) growing in ventilation (air conditioning systems) 495.7
      • specified type NEC 495.8
  • Alveolitis
    • allergic (extrinsic) 495.9
      • due to organisms (fungal, thermophilic actinomycete, other) growing in ventilation (air conditioning systems) 495.7
      • specified type NEC 495.8
  • Disease, diseased - see also Syndrome
  • Hypersensitive, hypersensitiveness, hypersensitivity - see also Allergy
    • pneumonitis NEC 495.9
  • Obstruction, obstructed, obstructive
    • airway NEC 519.8
      • with
        • allergic alveolitis NEC 495.9
        • asthma NEC (see also Asthma) 493.9
        • bronchiectasis 494.0
          • with acute exacerbation 494.1
        • bronchitis (see also Bronchitis, with, obstruction) 491.20
        • emphysema NEC 492.8
      • chronic 496
        • with
          • allergic alveolitis NEC 495.5
          • asthma NEC (see also Asthma) 493.2
          • bronchiectasis 494.0
            • with acute exacerbation 494.1
          • bronchitis (chronic) (see also Bronchitis, chronic, obstructive) 491.20
          • emphysema NEC 492.8
      • due to
  • Pneumonitis (acute) (primary) (see also Pneumonia) 486
    • allergic 495.9
    • hypersensitivity 495.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 495.9 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.