ICD-10 Code K02.9 – Dental caries, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K02.9 – Dental caries, unspecified
What it is
K02.9 identifies dental caries when the record does not specify the tooth, surface, or extent. Use it for documented tooth decay without further detail.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include visible decay, tooth sensitivity, pain, or a cavity noted on exam or imaging.
When to use this code
Use K02.9 when the provider documents dental caries but does not identify a more specific caries type. It also fits when the note lacks enough detail for a more precise caries code. If the chart specifies enamel, dentin, or root involvement, code that detail instead.
Do not use for
Do not use this code for caries with a documented specific site or type when a more exact code is available. Check documentation if the note describes caries-free findings or another dental disorder.
Coding tip
Always look for the most specific caries description in the dental record before defaulting to K02.9.