ICD-10 Code K08.55 – Allergy to existing dental restorative material (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K08.55 – Allergy to existing dental restorative material
What it is
K08.55 identifies an allergic reaction to material already used in a dental restoration, such as a filling, crown, or similar appliance. Use it when the allergy is to the restorative material itself, not to dental disease.
Clinical signs
Clinical features vary; refer to documentation. Findings may include localized oral irritation, redness, swelling, burning, or discomfort near the restored tooth, with symptoms linked to contact with the existing material.
When to use this code
Use this code when the provider documents an allergy or hypersensitivity to an existing dental restorative material. It may apply when the material is suspected or confirmed as the cause of oral symptoms. Check documentation if the record only notes pain, failure of a restoration, or an unspecified adverse reaction.
Do not use for
Do not use this code for routine dental caries, broken restorations, or mechanical problems with a filling or crown. If the record does not clearly document allergy to the material, check documentation.
Coding tip
Code K08.55 only when the chart links symptoms to an allergy involving an existing restoration material.