D9942Repair And/or Reline of Occlusal Guard

What This Code Covers

D9942 covers repair and/or reline of occlusal guard. A custom-fabricated oral appliance is provided for therapeutic purposes. Impressions, fabrication, and delivery are included in this code.

Billing Guide

Bill this code when:

• The repair described by D9942 is performed on an existing restoration or prosthesis
• The existing device is still serviceable after the repair
• Documentation describes the defect and repair method

Do not bill this code when:

• A new restoration or prosthesis is fabricated instead of repairing the existing one
• The device type does not match this code description
• The repair is included in another code being billed at the same visit
• The procedure is better described by D9930 (Treatment of complications (post-surgical) - Loss ...)

Insurance and Denial Prevention

Key Payer Rules:

• Coverage for adjunctive services varies widely by plan and procedure type
• Sedation and anesthesia codes may require documentation of medical necessity
• Some adjunctive services are included in the primary procedure fee by certain payers
• Time-based codes require accurate start and end time documentation

Common Denials and How to Respond:

• Bundled with primary procedure - Verify the payer's bundling policies and appeal if the adjunctive service required additional clinical resources.
• Not medically necessary - Document the specific clinical reason the adjunctive service was required.
• Time documentation insufficient - Ensure start and end times are recorded in the patient chart for time-based codes.