Specific code 2012 ICD-9-CM Diagnosis Code 473.9
Unspecified sinusitis (chronic)
  • Short description: Chronic sinusitis NOS.
  • ICD-9-CM 473.9 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 473.9 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 473.9.
  • More recent version(s) of ICD-9-CM 473.9: 2013 2014.
Disease Synonyms
  • Abscess of accessory sinus bone
  • Abscess of bone of accessory sinus
  • Abscess of nasal sinus
  • Chronic sinusitis
  • Disorder of nasal sinus
  • Empyema of nasal sinus
  • Nasal infection
  • Nasal sinus abscess
  • Nasal sinus disease
  • Nasal sinus empyema
  • Sinusitis
  • Sinusitis w nasal polyposis
  • Sinusitis with nasal polyps
  • Sinusitis, chronic
Applies To
  • Sinusitis (chronic) NOS
Convert to ICD-10-CM: 473.9 converts directly to:
  • 2014 ICD-10-CM J32.9 Chronic sinusitis, unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 473.9:
  • Abscess (acute) (chronic) (infectional) (lymphangitic) (metastatic) (multiple) (pyogenic) (septic) (with lymphangitis) (see also Cellulitis) 682.9
    • accessory sinus (chronic) (see also Sinusitis) 473.9
    • bone (subperiosteal) (see also Osteomyelitis) 730.0
      • accessory sinus (chronic) (see also Sinusitis) 473.9
      • acute 730.0
      • chronic or old 730.1
      • jaw (lower) (upper) 526.4
      • mastoid - see Mastoiditis, acute
      • petrous (see also Petrositis) 383.20
      • spinal (tuberculous) (see also Tuberculosis) 015.0 [730.88]
    • nasal (fossa) (septum) 478.19
      • sinus (chronic) (see also Sinusitis) 473.9
    • parasinus (see also Sinusitis) 473.9
    • perisinuous (nose) (see also Sinusitis) 473.9
    • sinus (accessory) (chronic) (nasal) (see also Sinusitis) 473.9
      • intracranial venous (any) 324.0
        • late effect - see category 326
  • Change(s) (of) - see also Removal of
    • hypertrophic
      • nasal sinus (see also Sinusitis) 473.9
      • turbinate, nasal 478.0
      • upper respiratory tract 478.9
  • Degeneration, degenerative
    • nasal sinus (mucosa) (see also Sinusitis) 473.9
    • sinus (cystic) (see also Sinusitis) 473.9
  • Empyema (chest) (diaphragmatic) (double) (encapsulated) (general) (interlobar) (lung) (medial) (necessitatis) (perforating chest wall) (pleura) (pneumococcal) (residual) (sacculated) (streptococcal) (supradiaphragmatic) 510.9
    • accessory sinus (chronic) (see also Sinusitis) 473.9
    • nasal sinus (chronic) (see also Sinusitis) 473.9
    • sinus (accessory) (nasal) (see also Sinusitis) 473.9
  • Fistula (sinus) 686.9
    • accessory sinuses (see also Sinusitis) 473.9
    • nasal 478.19
      • sinus (see also Sinusitis) 473.9
  • Granuloma NEC 686.1
    • nasal sinus (see also Sinusitis) 473.9
    • sinus (accessory) (infectional) (nasal) (see also Sinusitis) 473.9
  • Hypertrophy, hypertrophic
  • Infection, infected, infective (opportunistic) 136.9
    • accessory sinus (chronic) (see also Sinusitis) 473.9
    • nasal sinus (chronic (see also Sinusitis) 473.9
    • sinus (see also Sinusitis) 473.9
  • Inflammation, inflamed, inflammatory (with exudation)
    • accessory sinus (chronic) (see also Sinusitis) 473.9
    • nasal sinus (chronic) (see also Sinusitis) 473.9
    • sinus (see also Sinusitis) 473.9
  • Lesion(s)
    • sinus (accessory) (nasal) (see also Sinusitis) 473.9
  • Obstruction, obstructed, obstructive
    • sinus (accessory) (nasal) (see also Sinusitis) 473.9
  • Perforation, perforative (nontraumatic)
    • sinus (accessory) (chronic) (nasal) (see also Sinusitis) 473.9
  • Pyocele
    • sinus (accessory) (nasal) (see also Sinusitis) 473.9
    • turbinate (bone) 473.9
  • Rhinolith 478.19
    • nasal sinus (see also Sinusitis) 473.9
  • Sequestrum
    • sinus (accessory) (nasal) (see also Sinusitis) 473.9
  • Sinusitis (accessory) (nasal) (hyperplastic) (nonpurulent) (purulent) (chronic) 473.9
    • with influenza, flu, or grippe (see also Influenza) 487.1
    • allergic (see also Fever, hay) 477.9
    • antrum - see Sinusitis, maxillary
    • influenzal (see also Influenza) 487.1
    • syphilitic, any sinus 095.8
    • tuberculous, any sinus (see also Tuberculosis) 012.8
  • Suppuration, suppurative - see also condition
    • accessory sinus (chronic) (see also Sinusitis) 473.9
    • nasal sinus (chronic) (see also Sinusitis) 473.9
    • sinus (nasal) (see also Sinusitis) 473.9
  • Trouble - see also Disease
    • sinus (see also Sinusitis) 473.9
  • Vacuum
    • in sinus (accessory) (nasal) (see also Sinusitis) 473.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 473.9 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.