Complete loss of teeth due to periodontal diseases, class I

This code signifies the total absence of natural teeth in a patient, directly resulting from advanced periodontal disease. The "class I" designation indicates that the loss is due to a primary periodontal etiology, without significant contributing factors like extensive caries or trauma. This represents a severe and irreversible stage of periodontal disease leading to edentulism.

Apply this code when documentation clearly states complete edentulism caused by periodontal disease. This is appropriate for patients presenting for prosthetic rehabilitation (e.g., dentures, implants) where the underlying cause of tooth loss is explicitly attributed to periodontitis. Supporting documentation should detail the history of periodontal disease and confirm the complete absence of teeth.

• Ensure the documentation explicitly links the complete tooth loss to periodontal disease, not other causes like trauma or extensive caries.
• Verify that "class I" is documented or can be inferred from the clinical context, indicating primary periodontal etiology.
• Consider sequencing this code as a secondary diagnosis if the primary reason for the encounter is the fitting of prosthetics.