ICD-10 Code E11.638 – Type 2 diabetes mellitus with other oral complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E11.638 – Type 2 diabetes mellitus with other oral complications
What it is
This code identifies type 2 diabetes mellitus when the patient has an oral complication not named by a more specific diabetes code. Use it when the record links the oral problem to diabetes.
Clinical signs
Clinical features vary; refer to documentation. Oral findings may include diabetic-related mouth disease, such as gum or mucosal problems, but the chart should show a diabetes-related oral complication.
When to use this code
Use E11.638 when the provider documents type 2 diabetes with an oral complication and no more specific code fits. This may apply when the oral condition is described as diabetes-related but not otherwise classified. Confirm the causal link in the note.
Do not use for
Do not use this code for routine dental disease, isolated oral lesions, or oral problems without a documented diabetes connection. Check documentation if the oral complication is specified more precisely elsewhere in ICD-10-CM.
Coding tip
Code the oral complication only when the provider clearly connects it to type 2 diabetes; otherwise, use the specific oral diagnosis.