Dental caries on pit and fissure surface penetrat into pulp

This code signifies tooth decay that has originated in the grooves or depressions of the tooth surface and has progressed through the enamel and dentin layers, reaching the innermost pulp tissue. This penetration into the pulp indicates a significant and advanced stage of dental caries, often associated with pain and potential infection.

Apply this code when documentation clearly indicates a carious lesion on the occlusal, buccal, or lingual surfaces of a tooth, and the dentist has confirmed pulpal involvement. This typically occurs when the patient presents with symptoms such as spontaneous pain, prolonged sensitivity to temperature, or evidence of a periapical lesion on radiographs.

• Ensure the documentation explicitly states "pit and fissure" involvement and "pulpal penetration" or "pulpitis due to caries."
• Differentiate from caries that has not yet reached the pulp (e.g., K02.51, K02.52) or caries on smooth surfaces.
• Consider sequencing this code with codes for associated conditions like pulpitis (K04.0-) or periapical abscess (K04.7-) if also documented.