ICD-10 Code K02.53 – Dental caries on pit and fissure surface penetrating into pulp (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K02.53 – Dental caries on pit and fissure surface penetrating into pulp
What it is
This code identifies tooth decay on a pit or fissure surface that has progressed through enamel and dentin into the pulp. Use it when the documentation clearly states pulp involvement on a pit or fissure surface.
Clinical signs
Findings may include deep cavitation, pain, sensitivity, or evidence of pulpal exposure. Clinical features vary; refer to documentation for confirmation that the decay reaches the pulp.
When to use this code
Assign K02.53 when the record specifies caries on a pit or fissure surface with penetration into the pulp. You should use it for documented tooth decay affecting occlusal pits or fissures, not for unspecified caries depth. If the note only says “dental caries” or lacks surface detail, check documentation.
Do not use for
Do not use this code for smooth-surface caries, root caries, or caries not documented as reaching the pulp. Do not assume pulp involvement from pain alone.
Coding tip
Look for both the surface type and the depth statement; if either is missing, query the provider before coding.