Table of Contents
Introduction
The extraction is done, the operative note is written, and now someone on the billing team has to decide: was this tooth partially bony or completely bony? That one decision determines whether the claim goes out as D7230 or D7240 — and the ADA's own guidance is clear that the answer isn't about how hard the case was. It comes down to a specific, measurable definition of the anatomical crown. Getting that distinction right, and documenting it clearly, is what keeps impacted-tooth claims moving instead of bouncing back for review.
What Is CDT Code D7240?
D7240 reports removal of an impacted tooth where most or all of the anatomical crown is covered by bone, requiring mucoperiosteal flap elevation and bone removal to complete the extraction. The code sits within the CDT Code's surgical extraction family, alongside D7220 (soft-tissue impaction) and D7230 (partially bony impaction).
The key term is “anatomical crown,” which the ADA's Glossary of Dental Clinical and Administrative Terms defines as the portion of the tooth normally covered by, and including, enamel — in practical terms, the part of the tooth above the cemento-enamel junction. According to the ADA's published guidance on these two codes, “part of the crown” (D7230) is interpreted as less than 50% of that anatomical crown covered by bone, while “most or all of the crown” (D7240) is interpreted as 50% or more. The ADA guidance also specifically clarifies that requiring part of the occlusal surface to sit below the bone is not the correct test for D7240 — the measure is crown coverage, not occlusal depth.
Why this matters for billing: the treating dentist determines, based on clinical training and the full CDT Code entry, which code accurately describes the procedure performed. The billing team's job afterward is to confirm that the documentation supports whichever code was selected — not to select the code based on how long or difficult the surgery was.
D7240 vs. D7230 vs. D7241 (and D7220)
These codes describe different clinical presentations within the same impacted-tooth family, and they are not interchangeable. The ADA has stated directly that none of the four impacted-tooth removal codes are based on procedural difficulty — a longer or more demanding extraction does not, by itself, justify a different code.
| Code | Procedure Category | Defining Distinction | Billing Team's Verification Focus |
|---|---|---|---|
| D7220 | Impacted tooth removal — soft tissue | Occlusal surface covered by soft tissue only; no bone covering the crown | Confirm no bone removal was documented as part of the extraction |
| D7230 | Impacted tooth removal — partially bony | Less than 50% of the anatomical crown covered by bone | Confirm flap elevation and bone removal are documented, and crown coverage is under 50% |
| D7240 | Impacted tooth removal — completely bony | 50% or more of the anatomical crown covered by bone | Confirm flap elevation and bone removal are documented, and crown coverage is 50% or more |
| D7241 | Impacted tooth removal — completely bony, with unusual surgical complications | Meets all D7240 criteria, plus unusual complications (e.g., required nerve dissection, separate sinus closure, aberrant tooth position) | Confirm the specific complicating factor is documented in the clinical note, not just implied by case length |
Selection should always follow the documented clinical presentation and the procedure actually performed — never the perceived difficulty, length, or cost of the case alone. A straightforward extraction that happens to take longer than expected does not become D7241 without a documented complicating factor that meets the code's own criteria.
Clinical Documentation and Radiographic Support
The following facts generally help substantiate an accurately coded D7240 claim, though specific requirements — including which attachments are mandatory — vary by payer and plan:
- The specific tooth treated and its clinical presentation
- Clinical findings describing the degree of anatomical crown coverage by bone
- Documentation that mucoperiosteal flap elevation and bone removal were performed
- Diagnostic radiographs relevant to the documented procedure
- Any additional supporting information or attachments required under the specific payer's submission rules
These are good documentation practices, not a universal mandatory checklist — tooth identification conventions, required attachments, prior-authorization rules, and coverage criteria can all differ by payer and by plan. Many payers also require that impacted-tooth claims using codes like D7240 be submitted to medical insurance first, depending on the circumstances and the payer's coordination-of-benefits rules, so confirm the applicable submission order before filing.
Common Coding and Billing Problems
These are realistic risk points to build a review process around, not a claim that every instance causes denial — payer requirements vary.
| Problem | Prevention Step |
|---|---|
| Choosing a code based on perceived difficulty rather than documented crown coverage | Apply the 50% anatomical-crown threshold from the clinical note, not the length of the procedure |
| Insufficient documentation to support the selected code | Confirm the note states the degree of crown coverage and the flap/bone-removal performed |
| Incomplete or inconsistent tooth identification | Cross-check the tooth number or designation across the chart, radiograph, and claim |
| Missing payer-required attachments or radiographs | Verify the specific payer's submission requirements before filing |
| Not checking the patient's benefit plan or prior-authorization rules | Confirm plan-specific coverage criteria and any required authorization before treatment or billing |
Interactive Pre-Submission Checklist
This is an educational workflow aid for reviewing a D7240 claim before submission — not a substitute for clinical judgment or for verifying the specific payer's own requirements.
Practical Examples
The two scenarios below are brief, fictional, and educational only — they are not real patient cases, and neither reaches a definitive code selection on its own, since that always depends on the actual clinical documentation.
Illustrative scenario A: Partially Bony Suggestion
An operative note describes an impacted tooth where roughly a third of the anatomical crown was covered by bone, requiring flap elevation and limited bone removal.
Review Consideration: Based on the anatomical-crown threshold, the billing team would want to confirm with the clinical documentation whether this falls under D7230 rather than D7240, since the description suggests less than 50% coverage.
Illustrative scenario B: Unusual Surgical Complications
An operative note describes an impacted tooth with most of the anatomical crown covered by bone, flap elevation, bone removal, and an unexpected finding requiring careful nerve dissection during the procedure.
Review Consideration: The billing team would want to confirm whether the documented nerve dissection meets the criteria for D7241 rather than D7240, since D7241 requires both the completely bony presentation and a documented unusual complication.
Working With Sirius Solutions Global
Matching the selected code to what the operative note actually documents — and confirming the degree of anatomical crown coverage rather than relying on how difficult the case felt — is the foundation of a clean D7240 claim. From there, payer-specific requirements around attachments, tooth identification, authorization, and submission order still need to be checked case by case.
Sirius Solutions Global supports dental practices and oral surgery teams with billing and revenue cycle management, including claim review, documentation guidance, and denial follow-up for impacted-tooth and other surgical extraction claims. This article is educational and does not promise a specific reimbursement outcome for any claim.
Frequently Asked Questions About CDT Code D7240
What does CDT code D7240 represent?
How does D7240 differ from D7230?
How does D7240 differ from D7241?
What documentation may support a D7240 claim?
Are radiographs always required for payment?
Does reporting D7240 guarantee insurance coverage?
References and Further Reading:
ADA — Guidance on Coding for Impacted Teeth Removal Procedure (D7230 and D7240): Link
ADA — CDT coding education: Link
ADA — CDT Code information: Link
Disclaimer: This article is provided for general educational purposes only and does not constitute dental, legal, coding, or billing advice for any specific patient, practice, or claim. CDT code descriptors and ADA guidance are updated periodically (including the CDT 2026 revision); always verify current code definitions and the applicable payer's current policy before submitting a claim. Final selection of the CDT code that accurately describes a procedure performed rests with the treating dental professional, based on the actual clinical presentation and the full CDT Code entry — not with billing staff. Sirius Solutions Global makes no guarantee regarding claim approval, reimbursement amounts, or audit outcomes, and this content should not be treated as a substitute for official ADA guidance, the applicable payer's policy, or independent compliance review.
CDT is a registered trademark of the American Dental Association. This article references and paraphrases publicly available ADA guidance for educational purposes and does not reproduce the full CDT Manual.