Third Molar Impaction Codes Explained: A Clear Breakdown of D7220, D7230, D7240, and D7241

Third Molar Impaction Codes Explained: A Clear Breakdown of D7220, D7230, D7240, and D7241

Third molar extractions are among the most frequently billed surgical procedures in dentistry, and among the most common sources of claim denials. The problem usually isn't the procedure — it's the code. D7220, D7230, D7240, and D7241 each describe a different level of impaction, and selecting the wrong one is one of the fastest ways to have a claim reduced or denied.

D7220: Removal of Impacted Tooth – Soft Tissue

D7220 applies when the tooth is covered by soft tissue only, with no bone over any part of the crown. It is the mildest level of impaction billed under the impaction codes.

Common clinical indicators for D7220 include:

• The occlusal surface of the tooth is covered by gum tissue.
• No bone removal is required to access the tooth.
• A mucoperiosteal flap — the layer of gum tissue and periosteum lifted away from the bone — must still be elevated to expose and remove the tooth.

The defining feature is that soft tissue, not bone, is what stands between the tooth and the socket. If any portion of the crown is covered by bone, the case has moved past D7220 and into partial or complete bony impaction.

D7230: Removal of Impacted Tooth – Partially Bony

D7230 is reported when part of the crown is covered by bone and soft tissue. Delivering the tooth requires both mucoperiosteal flap elevation and bone removal.

Common clinical indicators for D7230 include:

• A portion of the crown is visible or accessible, while another portion remains under bone.
• Bone removal with a surgical handpiece or bur is required to expose enough of the tooth for delivery.
• The tooth may or may not require sectioning, depending on its angulation.

D7230 sits in the middle of the impaction spectrum, and it is the code most frequently confused with both D7220 and D7240. It is worth a second look at the operative note before the claim goes out.

D7240: Removal of Impacted Tooth – Completely Bony

D7240 applies when most or all of the crown is covered by bone. This is a more involved surgical procedure, typically requiring more extensive flap elevation, more bone removal, and frequently sectioning of the tooth to deliver it in pieces.

Common clinical indicators for D7240 include:

• The crown is substantially or entirely encased in bone before extraction.
• Significant bone removal is needed to access the tooth.
• Sectioning is often, though not always, necessary to complete the extraction.

The distinction between D7230 and D7240 comes down to how much of the crown is covered by bone. Operative notes should specify this clearly, since it is the detail carriers look for first when reviewing the claim.

D7241: Removal of Impacted Tooth – Completely Bony, With Unusual Surgical Complications

D7241 covers the same clinical picture as D7240 — a completely bony impaction — with the addition of unusual surgical complications. It is reserved for cases involving factors such as:

• Nerve exposure or proximity requiring extra surgical care.
• Involvement of the maxillary sinus.
• Aberrant tooth position or unusual root morphology that significantly increases surgical complexity.
• Involvement of adjacent teeth or structures during extraction.

The impaction level alone does not justify D7241; the record has to document what made the surgery unusual. This is the code most likely to face additional scrutiny from carriers, so the clinical narrative needs to do real work here.

Why Documentation Is the Deciding Factor for Impaction Codes

All four impaction codes hinge on two things: what the pre-operative imaging shows, and what the operative note describes. A panoramic film or CBCT scan that clearly shows the impaction level supports the code before treatment even begins. The operative note then needs to confirm what was done — how much bone was removed, whether the tooth was sectioned, and, in the case of D7241, what made the extraction unusual enough to warrant that code over D7240.

When documentation does not clearly support the level of impaction billed, carriers routinely reprocess the claim at a lesser code or deny it outright. A note that states "impacted tooth removed," without describing the bone coverage or the surgical steps taken, leaves both the coder and the claim exposed. The clinical record should tell the same story the code is telling.

Final Thoughts

D7220, D7230, D7240, and D7241 exist to reflect real differences in surgical complexity, and insurance carriers expect the documentation to align with them. Use D7220 when only soft tissue covers the tooth. Use D7230 when bone partially covers the crown. Use D7240 when bone covers most or all of the crown. Reserve D7241 for completely bony impactions with a documented surgical complication beyond the impaction itself. When in doubt, the imaging and the operative note should answer the question before the code does.

If your practice wants support with dental insurance billing, Dentalogic can help ensure claims are coded accurately and followed through to payment.

Note: This information is current as of July 2026. CDT guidelines and carrier policies may change, so always refer to the latest ADA Current Dental Terminology manual and payer-specific requirements. This article is for informational purposes only and does not constitute professional billing or clinical advice. Consult a dental billing specialist for specific cases.

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