Get started free

K12

Non-billable

Stomatitis and related lesions

K12 is the ICD-10-CM code for Stomatitis and related lesions. It is a non-billable category code — use a more specific child code such as K12.0 for billing.

Status
Header (non-billable)
Chapter
K00-K95
Subcodes
4
Edition
FY2026

K00-K95 Diseases of the digestive system

Excludes1 — not coded here

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

Use additional code

  • •code to identify:
  • •alcohol abuse and dependence (F10.-)
  • •exposure to environmental tobacco smoke (Z77.22)
  • •exposure to tobacco smoke in the perinatal period (P96.81)
  • •history of tobacco dependence (Z87.891)
  • •occupational exposure to environmental tobacco smoke (Z57.31)
  • •tobacco dependence (F17.-)
  • •tobacco use (Z72.0)

Frequently asked questions

What is ICD-10 code K12?
K12 is the ICD-10-CM code for "Stomatitis and related lesions". It falls under K00-K95 Diseases of the digestive system.
Is K12 a billable code?
No — K12 is a non-billable header code. Use a more specific child code (such as K12.0) for billing.
What are the subcodes of K12?
K12 has 4 more specific child codes, including K12.0, K12.1, K12.2.
What is excluded from K12?
Excludes1 (not coded here): cancrum oris (A69.0); cheilitis (K13.0); gangrenous stomatitis (A69.0); herpesviral [herpes simplex] gingivostomatitis (B00.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

Look up another ICD-10 code or condition

Powered by Eleplan

Free ICD-10 lookup is just the start. Eleplan keeps the whole care plan in one place.

Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, with Ellie, your AI care assistant, on top of it. Free to start.

Get started freeSee how Eleplan works →