ICD-10 Code K03.1 – Abrasion of teeth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K03.1 – Abrasion of teeth
What it is
K03.1 identifies wear of the tooth surface caused by external mechanical forces, such as brushing, chewing habits, or other repeated friction. It refers to loss of tooth structure that is not due to decay.
Clinical signs
Clinical findings may include smooth, flattened, or notched areas on the teeth, often with sensitivity or visible enamel loss. Clinical features vary; refer to documentation.
When to use this code
Use K03.1 when the record documents abrasion of teeth as the diagnosis, usually from mechanical wear rather than caries or trauma. Apply it when the provider clearly identifies tooth abrasion as the condition being treated or assessed. Check documentation if the cause is unclear.
Do not use for
Do not use this code for tooth decay, erosion from acids, or fractures from acute injury. If the note describes another type of tooth surface loss, choose the more specific documented diagnosis.
Coding tip
Confirm the provider documents abrasion specifically; do not infer it from general tooth wear alone.