D4230Anatomical Crown Exposure - Four or More Contiguous Teeth or Tooth Bounded Spaces per Quadrant

What This Code Covers

D4230 covers anatomical crown exposure - four or more contiguous teeth or tooth bounded spaces per quadrant. Soft tissue and possibly bone are removed to expose additional tooth structure. The code used depends on the number of teeth involved per quadrant.

Billing Guide

Bill this code when:

• The procedure described by D4230 is performed and documented
• The clinical indication supports the procedure
• Documentation meets the payer's requirements for the service

Do not bill this code when:

• A different procedure was actually performed
• The procedure is included in another code being billed at the same visit
• Documentation does not support the medical necessity of the procedure
• The procedure is better described by D4210 (Gingivectomy or gingivoplasty - four or more conti...)

Insurance and Denial Prevention

Key Payer Rules:

• Periodontal treatment is typically covered as a major service (50-80%)
• Full-mouth debridement (D4355) and D4346 may have specific frequency limits
• Surgical periodontal procedures often require documentation of previous non-surgical treatment
• Some plans require periodontal charting with probing depths for approval

Common Denials and How to Respond:

• Insufficient documentation - Submit complete periodontal charting, radiographs, and a narrative of findings.
• Non-surgical treatment not attempted first - Document previous scaling/root planing and explain why surgery is now indicated.
• Frequency exceeded - Verify the payer's frequency schedule for the specific procedure.