ICD-10 Code K03.2 – Erosion of teeth (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K03.2 – Erosion of teeth
What it is
K03.2 identifies loss of tooth structure caused by chemical wear, not decay. It is used when enamel or dentin is gradually dissolved by acids from diet, stomach contents, or other nonbacterial sources.
Clinical signs
Typical findings include smooth, rounded, or cupped areas of enamel loss and increased tooth sensitivity. Clinical features vary; refer to documentation for the documented pattern, cause, and affected teeth.
When to use this code
Use K03.2 when the record clearly documents dental erosion, acid wear, or acid-induced tooth surface loss. It fits cases tied to repeated exposure to acidic substances or reflux-related erosion when the diagnosis is stated. Do not infer the cause unless documented.
Do not use for
Do not use this code for dental caries, attrition from tooth-to-tooth contact, or abrasion from brushing or foreign objects. Check documentation if the note describes a different type of tooth wear.
Coding tip
Code K03.2 only when the provider documents erosion specifically; otherwise, query for the exact wear mechanism.