ICD-10 Code K08.9 – Disorder of teeth and supporting structures, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.9 – Disorder of teeth and supporting structures, unspecified
What it is
K08.9 identifies an unspecified disorder affecting the teeth or the tissues that support them. Use it when the record confirms a dental or periodontal problem but does not name a more specific condition.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the chart may describe tooth pain, loosening, loss, or other structural problems involving the teeth or supporting tissues.
When to use this code
Use K08.9 when the provider documents a disorder of the teeth or supporting structures but does not specify the exact diagnosis. It is also appropriate when the note is too limited to support a more precise code. Check documentation before defaulting to this unspecified category.
Do not use for
Do not use this code if the record names a specific dental, periodontal, or jaw condition that has its own code. Do not use it when the issue is only a routine dental finding or a normal variant.
Coding tip
Query for the exact dental diagnosis whenever possible, because K08.9 should be reserved for cases with insufficient specificity.