D7251Coronectomy - Intentional Partial Tooth Removal

What This Code Covers

D7251 covers a coronectomy, the intentional surgical removal of the crown portion of a tooth while leaving the roots in place. This technique is used primarily for lower wisdom teeth whose roots are in very close proximity to the inferior alveolar nerve. By removing only the crown and leaving the roots, the risk of nerve damage is significantly reduced. The roots are trimmed below the bone level and the site is closed, allowing bone to grow over the retained roots.

Billing Guide

Bill this code when:

• A coronectomy (intentional partial tooth removal) is performed
• The crown of the tooth is surgically removed while the roots are intentionally left in situ
• The procedure is done to avoid nerve damage or other complications from complete extraction
• The root stumps are trimmed below the alveolar bone crest

Do not bill this code when:

• The entire tooth including roots is removed. Use D7220-D7241 impaction codes
• Root fragments are unintentionally left behind (not a planned coronectomy)
• The retained roots subsequently require removal. Use D7250 for the second procedure
• A simple extraction is performed. Use D7140 or D7210

Insurance and Denial Prevention

Key Payer Rules:

• D7251 is a relatively newer code and may not be in all payer fee schedules
• Coverage varies; some payers treat it similarly to impaction extraction codes
• Strong documentation of nerve proximity is essential for approval
• CBCT imaging supporting the decision for coronectomy strengthens the claim

Common Denials and How to Respond:

• Not a covered benefit - Some plans do not recognize D7251. Appeal with clinical literature supporting coronectomy as a standard-of-care technique and documentation of nerve proximity.
• Should be an impaction code - Explain that a coronectomy was performed intentionally to avoid nerve damage. The roots were purposely left in situ, which is clinically different from a complete impaction removal.
• Incomplete procedure - Clarify that coronectomy is an intentional, complete procedure with a defined outcome (crown removal, root retention to protect the nerve). It is not an incomplete extraction.