ICD-10 Code E10.630 – Type 1 diabetes mellitus with periodontal disease (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E10.630 – Type 1 diabetes mellitus with periodontal disease
What it is
This code identifies type 1 diabetes mellitus accompanied by periodontal disease, a chronic inflammatory condition affecting the gums and supporting structures of the teeth. Use it when the record clearly links the diabetes diagnosis with periodontal disease.
Clinical signs
Common findings include inflamed, swollen, or bleeding gums, periodontal pocketing, and tooth support loss. Clinical features vary; refer to documentation and confirm the periodontal disease is present with type 1 diabetes.
When to use this code
Use this code when the clinician documents type 1 diabetes and periodontal disease in the same encounter or problem list. It is appropriate when the periodontal condition is attributed to, or recorded with, the diabetes diagnosis. Check documentation if the relationship is unclear.
Do not use for
Do not use it for type 2 diabetes, gingivitis without periodontal disease, or diabetes without documented periodontal involvement. If the chart does not specify periodontal disease, code only what is supported.
Coding tip
Verify both the diabetes type and the periodontal diagnosis in the note before assigning E10.630.