K12.0

K12.0: Recurrent oral aphthae

Billable / specific codeICD-10-CM

K12.0 is a billable, specific ICD-10-CM code for recurrent oral aphthae. It is valid for submission on a claim.

Check K12.0 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Aphthous stomatitis (major) (minor)
Bednar's aphthae
Periadenitis mucosa necrotica recurrens
Recurrent aphthous ulcer
Stomatitis herpetiformis

Excludes1 inherited from the categories above K12.0

A category’s note binds every code beneath it.

Written on K12: Stomatitis and related lesions

cancrum oris (A69.0)
cheilitis (K13.0)
gangrenous stomatitis (A69.0)
herpesviral [herpes simplex] gingivostomatitis (B00.2)
noma (A69.0)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

K12.0 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A54111Billing and Coding: Speech Language Pathology (SLP) Services: Communication Disorders

Alphabetic index entries that lead here

Canker(mouth) (sore)
Periadenitis mucosa necrotica recurrens
Aphthae, aphthous›Bednar's
Aphthae, aphthous›oral(recurrent)
Aphthae, aphthous›stomatitis(major) (minor)
Aphthae, aphthous›ulcer(oral) (recurrent)
Bednar's›aphthae
Stomatitis›aphthous
Stomatitis›herpetiformis
Ulcer, ulcerated, ulcerating, ulceration, ulcerative›aphthous(oral) (recurrent)
Sore›mouth›canker

Code history

Unchanged in every release from FY2024 to FY2027.