ICD-10 Code K02.63 – Dental caries on smooth surface penetrating into pulp (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K02.63 – Dental caries on smooth surface penetrating into pulp
What it is
K02.63 identifies decay on a tooth’s smooth surface that has advanced through the enamel and dentin into the pulp. Use it when documentation shows caries with pulp involvement on a smooth surface.
Clinical signs
Findings may include visible cavitation, tooth sensitivity, pain, or evidence of deep decay extending to the pulp. Clinical features vary; refer to documentation.
When to use this code
Use this code when the dentist or clinician documents smooth-surface caries that penetrates into the pulp. It fits cases where the record clearly states pulp involvement, not just deep decay or unspecified caries.
Choose this code only when the tooth surface type and depth are documented. If the note does not specify smooth surface or pulp penetration, check documentation before assigning K02.63.
Do not use for
Do not use for pit and fissure caries, root caries, or caries that have not reached the pulp. Do not assume pulp involvement from pain alone.
Coding tip
Match the exact surface and depth wording in the dental record before coding K02.63.