ICD-10 Code K02.3 – Arrested dental caries (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K02.3 – Arrested dental caries
What it is
Arrested dental caries means a tooth decay lesion that is no longer actively progressing. The affected area is typically hard and stable rather than soft or expanding.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the lesion appears darkened, hardened, and inactive on exam, with no evidence of continuing breakdown.
When to use this code
Use this code when the dentist documents arrested caries or an inactive decay lesion. It fits cases where prior decay is present but currently stable and not requiring active caries treatment.
Document the inactive status clearly, especially if the chart distinguishes it from active decay or a restored tooth surface. Check documentation if the note only describes a history of caries without stating arrest.
Do not use for
Do not use this code for active dental caries, recurrent caries, or unspecified tooth decay. If the record does not confirm that the lesion is arrested, check documentation.
Coding tip
Code K02.3 only when the provider explicitly identifies the lesion as arrested or inactive.