ICD-10 Code E09.638 – Drug or chemical induced diabetes mellitus with other oral complications (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.638 – Drug or chemical induced diabetes mellitus with other oral complications
What it is
This code identifies diabetes caused by a drug or chemical, with an associated oral complication. Use it when the record links the diabetes to a substance and documents a mouth-related problem not captured by a more specific code.
Clinical signs
Clinical features vary; refer to documentation. Oral findings may include mucosal, periodontal, or other mouth-related complications noted alongside drug- or chemical-induced diabetes.
When to use this code
Use E09.638 when the provider documents drug- or chemical-induced diabetes mellitus and also specifies another oral complication. The causal substance should be identified in the chart when known. If the oral issue is described differently or more specifically, code to the documented condition.
Do not use for
Do not use this code for diabetes not caused by a drug or chemical, or when the oral problem is unrelated to the diabetic condition. Check documentation if the record does not clearly connect the diabetes and oral complication.
Coding tip
Confirm both the cause of diabetes and the oral complication are documented before assigning E09.638.