Non-Billable / Non-Specific Code
ICD-10-CM K12 is the diagnosis code for Stomatitis and related lesions. This code falls under the section "Diseases of oral cavity and salivary glands" within Chapter 11 — Diseases of the digestive system (K00-K95). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as K12. They are mutually exclusive:
Understanding where K12 sits in the ICD-10-CM classification helps ensure proper coding:
No, K12 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
K12 is the ICD-10-CM diagnosis code for "Stomatitis and related lesions". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K12 is located in Section K00-K14 — "Diseases of oral cavity and salivary glands" within Chapter 11 of the ICD-10-CM Tabular List.
K12 has 4 sub-code(s) that provide more specific detail: K12.0, K12.1, K12.2, K12.3.
Use K12 when the patients documented diagnosis matches "Stomatitis and related lesions" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Stomatitis and related lesions is K12.
No, K12 is non-billable. Use a more specific sub-code for primary diagnosis billing.
K12 is in Chapter 11 of the ICD-10-CM Tabular List.
Type 1 Excludes for K12 include: cancrum oris (A69.0); cheilitis (K13.0); gangrenous stomatitis (A69.0) and more.
Yes, K12 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.