Specific code 2013 ICD-9-CM Diagnosis Code 522.6
Chronic apical periodontitis
  • Short description: Chr apical periodontitis.
  • ICD-9-CM 522.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 522.6 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 2013 version of ICD-9-CM 522.6.
  • More recent version(s) of ICD-9-CM 522.6: 2014 2015.
Convert to ICD-10-CM: 522.6 converts directly to:
  • 2015/16 ICD-10-CM K04.5 Chronic apical periodontitis
Applies To
  • Apical or periapical granuloma
  • Apical periodontitis NOS
ICD-9-CM Volume 2 Index entries containing back-references to 522.6:
  • Granuloma NEC 686.1
    • apical 522.6
    • dental 522.6
    • periapical 522.6
    • pyogenic, pyogenicum (skin) 686.1
      • maxillary alveolar ridge 522.6
      • oral mucosa 528.9
  • Periodontitis (chronic) (complex) (compound) (simplex) 523.40
    • apical 522.6
      • acute (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 522.6 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.