Specific code 2012 ICD-9-CM Diagnosis Code 522.4
Acute apical periodontitis of pulpal origin
  • Short description: Ac apical periodontitis.
  • ICD-9-CM 522.4 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 522.4 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 2012 version of ICD-9-CM 522.4.
  • More recent version(s) of ICD-9-CM 522.4: 2013 2014 2015.
Convert to ICD-10-CM: 522.4 converts directly to:
  • 2015/16 ICD-10-CM K04.4 Acute apical periodontitis of pulpal origin
Approximate Synonyms
  • Acute apical periodontitis
  • Dental infection
  • Infection of tooth
ICD-9-CM Volume 2 Index entries containing back-references to 522.4:
  • Infection, infected, infective (opportunistic) 136.9
    • alveolus, alveolar (process) (pulpal origin) 522.4
    • dental (pulpal origin) 522.4
    • focal
      • teeth (pulpal origin) 522.4
      • tonsils 474.00
    • periapical (pulpal origin) 522.4
  • Periodontitis (chronic) (complex) (compound) (simplex) 523.40
    • apical 522.6
      • acute (pulpal origin) 522.4
  • Sepsis (generalized) 995.91
    • dental (pulpal origin) 522.4
  • Septic - see also condition
    • teeth (pulpal origin) 522.4
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 522.4 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.