Non-Billable / Non-Specific Code
ICD-10-CM K13 is the diagnosis code for Other diseases of lip and oral mucosa. This code falls under the section "Diseases of oral cavity and salivary glands" within Chapter 11 â 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 are not included in K13. If the patient has both, code each condition separately:
Understanding where K13 sits in the ICD-10-CM classification helps ensure proper coding:
No, K13 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
K13 is the ICD-10-CM diagnosis code for "Other diseases of lip and oral mucosa". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K13 is located in Section K00-K14 â "Diseases of oral cavity and salivary glands" within Chapter 11 of the ICD-10-CM Tabular List.
K13 has 8 sub-code(s) that provide more specific detail: K13.0, K13.1, K13.2, K13.3, K13.4 and more.
Use K13 when the patients documented diagnosis matches "Other diseases of lip and oral mucosa" 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 Other diseases of lip and oral mucosa is K13.
No, K13 is non-billable. Use a more specific sub-code for primary diagnosis billing.
K13 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K13 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.