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K12.1

K12.1: Other forms of stomatitis

Billable / specific codeICD-10-CM

K12.1 is a billable, specific ICD-10-CM code for other forms of stomatitis. It is valid for submission on a claim.

Check K12.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • acute necrotizing ulcerative stomatitis (A69.1)
  • Vincent's stomatitis (A69.1)

Inclusion terms

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

  • Stomatitis NOS
  • Denture stomatitis
  • Ulcerative stomatitis
  • Vesicular stomatitis

Excludes1 inherited from the categories above K12.1

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

K12.1 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

  • Stomatitis(denture) (ulcerative)
  • Catarrh, catarrhal›mouth
  • Inflammation, inflamed, inflammatory›mouth
  • Stomatitis›catarrhal
  • Stomatitis›follicular
  • Stomatitis›malignant
  • Stomatitis›membranous acute
  • Stomatitis›septic
  • Stomatitis›vesicular
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative›buccal(cavity) (traumatic)
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative›oral mucosa(traumatic)
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative›palate(soft)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under K12

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.