Dental caries on pit and fissure surfc penetrat into dentin

This code signifies tooth decay that has progressed beyond the enamel layer and into the underlying dentin, specifically affecting the pits and fissures of the tooth surface. This indicates a moderate stage of dental caries where the demineralization has created a cavity within the occlusal, buccal, or lingual grooves.

Use this code when dental examination and diagnostic imaging confirm a carious lesion located in a pit or fissure that has visibly or radiographically penetrated the dentin. Documentation should clearly state "dentin involvement," "moderate caries," or "caries into dentin" in the context of a pit and fissure lesion.

• Ensure documentation specifies "pit and fissure" involvement; do not use for smooth surface caries.
• Distinguish from K02.3 (caries limited to enamel) and K02.53 (caries penetrating pulp).
• Laterality (right/left) and tooth number are not specified in this code, but may be documented for clinical clarity.