Specific code 2014 ICD-9-CM Diagnosis Code 528.2
Oral aphthae
  • Billable Code
  • ICD-9-CM 528.2 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 528.2 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Aphthous stomatitis
  • Aphthous stomatitis (canker sore of mouth)
  • aphthous ulcer of mouth
Clinical Information
  • A recurrent disease of the oral mucosa of unknown etiology. It is characterized by small white ulcerative lesions, single or multiple, round or oval, lasting for 7-14 days and healing without scarring.
  • A recurrent disease of the oral mucosa of unknown etiology. It is characterized by small white ulcerative lesions, single or multiple, round or oval. Two to eight crops of lesions occur per year, lasting for 7 to 14 days and then heal without scarring. (from jablonski's dictionary of dentistry, 1992, p742)
  • Canker sores are small, round sores on the inside the cheek, under the tongue, or in the back of the throat. They usually have a red edge and a gray center. They can be quite painful. They are not the same as cold sores, which are caused by herpes simplex.canker sores aren't contagious. They may happen if you have a viral infection. They may also be triggered by stress, food allergies, lack of vitamins and minerals, hormonal changes or menstrual periods. In some cases the cause is unknown.in most cases, the sores go away by themselves. Some ointments, creams or rinses may help with the pain. Avoiding hot, spicy food while you have a canker sore also helps.
  • Recurrent disease of the oral mucosa of unknown etiology, characterized by small white ulcerative lesions lasting 7 to 14 days.
528.2 Excludes
  • herpetic stomatitis (054.2)
Applies To
  • Aphthous stomatitis
  • Canker sore
  • Periadenitis mucosa necrotica recurrens
  • Recurrent aphthous ulcer
  • Stomatitis herpetiformis
Convert to ICD-10-CM: 528.2 converts directly to:
  • 2014 ICD-10-CM K12.0 Recurrent oral aphthae
ICD-9-CM Volume 2 Index entries containing back-references to 528.2:
  • Aphthae, aphthous - see also condition
    • Bednar's 528.2
    • oral 528.2
    • stomatitis 528.2
  • Bednar's aphthae 528.2
  • Canker (mouth) (sore) 528.2
  • Periadenitis mucosa necrotica recurrens 528.2
  • Sore
  • Stomatitis 528.00
    • aphthous 528.2
    • herpetiformis 528.2
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative 707.9
    • aphthous (oral) (recurrent) 528.2
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 528.2 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 2014 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.