Pulpitis

Pulpitis is the inflammation of the dental pulp, the neurovascular tissue within the tooth's internal chamber and root canal system. It is most commonly caused by bacterial invasion from untreated dental caries that has progressed through the enamel and dentin layers toward the pulp, though it can also result from traumatic injury, repeated restorative procedures on the same tooth, cracked tooth syndrome, or chemical irritation from dental materials. Clinically, pulpitis is classified into two categories based on the reversibility of the inflammatory process. Reversible pulpitis presents as a transient sensitivity to thermal or osmotic stimuli that resolves promptly once the stimulus is removed, indicating that the pulp retains the capacity to heal if the irritant is eliminated. Irreversible pulpitis produces spontaneous, lingering, or radiating pain that persists after the stimulus is removed, signifying that the inflammatory damage has exceeded the pulp's ability to recover.

Accurate diagnosis of pulpitis type is critical because it directly dictates the treatment protocol. Reversible pulpitis can typically be managed by removing the offending irritant, such as excavating the carious lesion and placing a sedative or permanent restoration, allowing the pulp to return to a healthy state. Irreversible pulpitis, by contrast, requires endodontic intervention to remove the compromised pulp tissue entirely, either through root canal therapy to preserve the tooth or extraction if the tooth is deemed non-restorable. Diagnostic methods include thermal testing with cold refrigerant or heated gutta-percha, electric pulp testing, percussion testing, and radiographic evaluation for periapical pathology. The clinician's documentation of the specific test results and the patient's response pattern forms the clinical basis for the treatment decision.

For billing and revenue cycle management, the pulpitis diagnosis recorded in the patient chart must support the CDT codes submitted on the claim. A diagnosis of reversible pulpitis supports restorative procedure codes, while irreversible pulpitis justifies endodontic procedure codes that carry significantly higher reimbursement. When payers audit or deny root canal claims, the documented pulpitis diagnosis and supporting test results are the first elements reviewed. Practices that standardize their pulp diagnostic workflow and ensure consistent documentation of test methods, stimulus type, and patient response patterns experience fewer denials and faster claim resolution on endodontic cases.