ICD-10 Code K08.109 – Complete loss of teeth, unspecified cause, unspecified class (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.109 – Complete loss of teeth, unspecified cause, unspecified class
What it is
K08.109 identifies complete loss of all teeth when the cause and the denture status class are not specified. Use it when the record documents total tooth loss but does not provide a more specific explanation.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the mouth is edentulous, and the patient may report difficulty chewing, speaking, or maintaining oral function.
When to use this code
Use this code when the provider documents complete tooth loss and does not identify whether it is due to disease, trauma, or another cause. It also fits cases where the chart notes edentulism but gives no additional detail. If the record specifies a cause or a different denture class, you should code more precisely.
Do not use for
Do not use this code for partial tooth loss, retained teeth, or tooth loss with a documented specific cause that has its own code. Check documentation when the chart distinguishes upper and lower edentulism or another more specific class.
Coding tip
Verify whether the note supports “complete loss” and whether a more specific etiology is documented before assigning K08.109.