ICD-10 Code E11.630 – Type 2 diabetes mellitus with periodontal disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E11.630 – Type 2 diabetes mellitus with periodontal disease
What it is
E11.630 identifies type 2 diabetes mellitus documented with periodontal disease. Use it when the record links the diabetes to gum and supporting tissue disease, not just general oral inflammation.
Clinical signs
Clinical features may include inflamed gums, bleeding, periodontal pocketing, loose teeth, or bone loss around teeth. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents periodontal disease in a patient with type 2 diabetes and the relationship is stated or implied in the chart. It may appear in dental, primary care, or specialist notes. Check documentation if the oral condition is described without a diabetes link.
Do not use for
Do not use it for type 1 diabetes, gestational diabetes, or diabetes without documented periodontal disease. Do not assign it for simple gingivitis or unspecified oral complaints unless periodontal disease is clearly recorded.
Coding tip
Verify both the diabetes type and the periodontal diagnosis in the provider note before assigning E11.630.