ICD-10 Code K02.7 – Dental root caries (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K02.7 – Dental root caries
What it is
K02.7 identifies decay that affects the exposed root surface of a tooth, usually where gum recession has uncovered cementum or dentin. It is used when the carious lesion is on the root rather than the crown.
Clinical signs
Typical findings include a soft, discolored, or cavitated area on the root surface, often near the gumline. Clinical features vary; refer to documentation.
When to use this code
Use K02.7 when the record clearly documents dental root caries or root-surface decay. This is appropriate when the clinician specifies the lesion involves the root, not general dental caries or coronal decay. Check documentation if the site is unclear.
Do not use for
Do not use this code for caries limited to the tooth crown or for unspecified dental decay. If the note does not identify root involvement, choose the more accurate documented code or verify the record.
Coding tip
Confirm that the provider documents root involvement before assigning K02.7.