What D7451 means

D7451 covers the removal of a benign odontogenic cyst or tumor — lesion diameter greater than 1.25 cm. "D" is dental, "74" is this oral surgery group, and "51" is this larger benign odontogenic cyst/tumor removal. It's the same type of procedure as D7450 (removing a benign odontogenic — tooth-tissue-derived — cyst or tumor of the jaw, with pathology) but for a larger lesion: one greater than 1.25 cm in diameter (versus D7450's up to 1.25 cm). So it's distinguished from D7450 only by the size (the cyst/tumor being larger). A larger odontogenic cyst/tumor involves more of the jaw bone and typically requires a more involved removal.

So it's surgically removing a larger (over 1.25 cm) benign (non-cancerous) odontogenic jaw cyst or tumor — like D7450 but for a bigger lesion.

Larger odontogenic cysts/tumors (over 1.25 cm) are more significant lesions — they involve more of the jaw bone (having grown larger), and may have caused more bone expansion/destruction, more displacement of teeth/structures, and more risk to the jaw. Removing a larger one is more involved — accessing and removing a larger lesion from the bone (a larger bony cavity), often requiring more bone removal/access, and possibly addressing the larger resulting defect (e.g., with grafting, or for very large/aggressive lesions, more extensive reconstruction). For aggressive types (large keratocysts, ameloblastomas), thorough removal (and follow-up) is especially important (to prevent recurrence). The tissue is examined by pathology. D7451 is for a larger one (over 1.25 cm); D7450 is for a smaller one (up to 1.25 cm). For benign NON-odontogenic cysts/tumors, the codes are D7460/D7461. Coverage is under oral surgery benefits (and sometimes medical); the pathology is separate. Documentation of the larger lesion and its removal supports the claim. Larger/aggressive lesions are often managed by an oral and maxillofacial surgeon, sometimes in a surgical setting.

When it's typically used

D7451 is reported for removing a larger (greater than 1.25 cm) benign (non-cancerous) odontogenic cyst or tumor — a larger jaw cyst/tumor arising from tooth-forming tissues (e.g., a large dentigerous cyst, odontogenic keratocyst, or ameloblastoma) — surgically removing it (often with more bone removal/access) with pathology. It's like D7450 but for a larger lesion, distinct from non-odontogenic cysts/tumors (D7460/D7461).

How much does D7451 cost?

Removal of a larger benign odontogenic cyst or tumor is a moderate-to-significant fee, often roughly 700 to 1,800+ USD depending on region, the size/location, and complexity — more than the small one (D7450), reflecting the more involved removal (more bone, a larger cavity, possible grafting). The pathology lab fee is separate. Aggressive types or large lesions may require more extensive surgery (and reconstruction), increasing the cost.

Is D7451 covered by insurance?

Covered under oral surgery benefits (and sometimes medical, especially for larger/more involved cases). Documentation of the cyst/tumor (its odontogenic origin, benign nature, size over 1.25 cm, location, the involvement of bone) and its removal supports the claim. The pathology is billed separately. It's distinguished from the smaller one (D7450) and from non-odontogenic cysts/tumors (D7460/D7461). Larger/aggressive lesions may involve more extensive treatment. Verifying coverage helps.

A larger odontogenic cyst or tumor

D7451 is for a larger odontogenic cyst/tumor, and understanding this clarifies the code.

D7451 is for removing a benign odontogenic cyst or tumor greater than 1.25 cm — and understanding this clarifies the code. It's the same procedure as D7450 (removing a benign odontogenic jaw cyst/tumor with pathology), distinguished only by the size: a benign odontogenic cyst/tumor up to 1.25 cm → D7450; greater than 1.25 cm → D7451. So D7451 is the 'larger' one. The lesion is still benign (non-cancerous) and odontogenic (from tooth tissues) — the difference from D7450 is the size.

The larger size is significant for a jaw cyst/tumor: a larger lesion has grown more within the jaw bone, which typically means it involves more bone (a larger area of the jaw affected), may have caused more bone expansion/destruction (more thinning/weakening of the jaw, more deformity), and may have displaced more teeth/structures or impinged on nerves/the sinus. So a larger odontogenic cyst/tumor is a more significant lesion (more jaw involvement). Removing it is more involved (a larger lesion to remove from a larger bony cavity). For aggressive types (which can grow large), a larger size may reflect more advanced local disease. So while D7450 and D7451 differ only by the size threshold in coding, the larger size (D7451) reflects a more significant jaw lesion. So D7451 captures the larger benign odontogenic cyst/tumor removal. The oral surgeon removes the larger lesion. For patients, understanding that D7451 is for a larger odontogenic cyst/tumor clarifies the code. It's the larger one. The surgeon removes it. Understanding this helps patients see that D7451 is for removing a benign odontogenic cyst or tumor greater than 1.25 cm — the same procedure as D7450 (removing a benign tooth-tissue-derived jaw cyst/tumor with pathology), distinguished only by the size — with the larger size reflecting a more significant lesion (more jaw bone involved, more potential expansion/destruction, more displacement of teeth/structures) and a more involved removal, so the size determines whether D7450 (up to 1.25 cm) or D7451 (over 1.25 cm) applies.

The more involved removal

Removing a larger lesion is more involved, and understanding it clarifies what's involved.

Removing a larger benign odontogenic cyst/tumor (D7451) is a more involved procedure than removing a small one — and understanding it clarifies what's involved. The greater involvement: more access/bone removal — a larger lesion requires more access (a larger window in the bone) to reach and remove it; removing the larger lesion — removing the larger cyst/tumor (enucleation and/or curettage) from the larger bony cavity, more extensive than for a small lesion; aggressive types — for aggressive types (large keratocysts, ameloblastomas), more aggressive removal is often needed (e.g., a peripheral ostectomy — removing a margin of surrounding bone — or other measures, even resection for some ameloblastomas), to thoroughly remove the lesion and reduce recurrence; the larger defect — a larger removal leaves a larger bony defect/cavity, which may need management (e.g., bone grafting to fill a large cavity, or for very large defects, more involved reconstruction); and associated structures — addressing more involved structures (teeth, nerves, the sinus) as needed. So the larger removal is more extensive.

Given the greater involvement, larger/aggressive lesions are often managed by an oral and maxillofacial surgeon, frequently in a surgical/hospital setting (under general anesthesia for an extensive removal). The tissue is examined by pathology (confirming the diagnosis). After removal and healing, the larger lesion is gone (with follow-up, especially for aggressive types, to monitor for recurrence). The larger defect heals/fills in (sometimes aided by grafting). So removing a larger lesion is a more involved jaw surgery. The oral surgeon performs the more involved removal. For patients, understanding that removing a larger lesion is more involved — more access, removal, and possible reconstruction — clarifies what's involved. It's a more involved removal. The surgeon performs it. Understanding this helps patients see that removing a larger benign odontogenic cyst/tumor (D7451) is a more involved procedure than removing a small one — requiring more access/bone removal to reach and remove the larger lesion from a larger bony cavity, often more aggressive removal for aggressive types (like keratocysts/ameloblastomas, e.g., removing a margin of bone to reduce recurrence), and management of the larger defect (possibly with bone grafting or reconstruction) — frequently managed by an oral and maxillofacial surgeon in a surgical setting, with pathology confirming the diagnosis and follow-up to monitor for recurrence.

Aggressive odontogenic lesions and follow-up

Some odontogenic lesions are aggressive and need follow-up, and understanding this clarifies the care.

Some benign odontogenic cysts/tumors (especially larger ones) are locally aggressive and require careful management and follow-up — and understanding this clarifies the care. While benign (non-cancerous), certain odontogenic lesions behave aggressively in the local area: odontogenic keratocysts (OKCs) — known for a tendency to recur (even after removal, they can come back) and to grow extensively; ameloblastomas — benign tumors that can grow large and destroy bone, and tend to recur if not completely removed (some require resection for adequate treatment); and certain other types. For these aggressive lesions, the treatment emphasizes thorough, complete removal (e.g., with adjunctive measures like peripheral ostectomy, or more extensive surgery for ameloblastomas) to minimize the chance of recurrence, and careful follow-up (monitoring with periodic exams and imaging over years to detect any recurrence early). So aggressive types need thorough removal and follow-up.

This is why the diagnosis (from pathology) matters — knowing the specific type guides the treatment (a simple cyst vs an aggressive keratocyst/ameloblastoma are managed differently, with the aggressive ones needing more thorough treatment and follow-up). For a larger lesion (D7451), the possibility of an aggressive type (which can grow large) makes proper diagnosis, thorough removal, and follow-up important. The oral surgeon (and the patient) follow up to monitor for recurrence, especially for aggressive lesions. So aggressive odontogenic lesions need careful management and follow-up. The surgeon manages and monitors them. For patients, understanding that some odontogenic lesions are aggressive and need follow-up clarifies the care. Some need thorough removal and monitoring. The surgeon manages it. Understanding this helps patients see that some benign odontogenic cysts/tumors (especially larger ones) are locally aggressive — like odontogenic keratocysts (prone to recurrence) and ameloblastomas (which can grow large, destroy bone, and recur if not completely removed) — requiring thorough, complete removal (with adjunctive measures or more extensive surgery) to minimize recurrence, and careful follow-up (periodic exams and imaging over years to detect any recurrence early) — so the diagnosis (from pathology) guides the treatment, and for a larger lesion (D7451) the possibility of an aggressive type makes proper diagnosis, thorough removal, and monitoring important.

Where D7451 fits among the cyst/tumor codes

D7451 fits among the cyst/tumor codes by origin and size, and understanding this clarifies the coding.

D7451 fits within the benign jaw cyst/tumor removal codes, organized by origin and size — and understanding this clarifies the coding. The benign odontogenic codes: D7450 — up to 1.25 cm (small); D7451 — greater than 1.25 cm (larger — this code). The benign non-odontogenic codes: D7460 — up to 1.25 cm; D7461 — greater than 1.25 cm. So the codes distinguish origin (odontogenic, from tooth tissues: D7450/D7451, vs non-odontogenic, from other tissues: D7460/D7461) and size (up to vs over 1.25 cm). D7451 is the larger, odontogenic one.

The coding: a benign odontogenic cyst/tumor is coded by size (D7450 up to 1.25 cm, D7451 over 1.25 cm); a benign non-odontogenic one by size (D7460/D7461). The origin (odontogenic vs not) is determined by the lesion's type/tissue of origin (confirmed by pathology). So the surgeon codes D7451 for a larger benign odontogenic cyst/tumor. These benign cyst/tumor codes are distinct from: the soft-tissue lesion codes (D7410-D7415), and the malignant codes (malignant lesions D7413-D7415, malignant tumors D7440/D7441). For a malignant jaw tumor, the malignant codes apply, not D7450/D7451 (which are for benign). So D7451 is the larger benign odontogenic cyst/tumor removal. The surgeon codes by origin and size. For patients, understanding where D7451 fits — the larger benign odontogenic one — clarifies the coding. It's the larger odontogenic one. The surgeon codes by origin/size. Understanding this helps patients see that D7451 fits among the benign jaw cyst/tumor removal codes — distinguished by origin (odontogenic: D7450/D7451, vs non-odontogenic: D7460/D7461) and size (up to vs over 1.25 cm) — as the larger (greater than 1.25 cm) benign odontogenic cyst/tumor removal, with the origin determined by the lesion's type (from pathology), and these benign cyst/tumor codes being distinct from the soft-tissue lesion codes (D7410-D7415) and the malignant codes (D7413-D7415, D7440/D7441) — so the surgeon codes by origin and size, using D7451 for a larger benign odontogenic cyst/tumor.

Frequently asked questions

What is the D7451 dental code?

It's the removal of a benign odontogenic cyst or tumor greater than 1.25 cm — surgically removing a larger benign (non-cancerous) cyst or tumor of the jaw that arose from tooth-forming tissues (e.g., a large dentigerous cyst, odontogenic keratocyst, or ameloblastoma). It's like D7450 but for a larger lesion (over 1.25 cm).

How is it different from D7450?

Both remove a benign odontogenic jaw cyst/tumor (with pathology). They differ only by size — D7450 is for a lesion up to 1.25 cm, and D7451 is for one greater than 1.25 cm. So D7451 is for a larger lesion, typically involving more bone and a more involved removal.

Why does the size matter?

A larger odontogenic cyst/tumor has grown more within the jaw bone — involving more bone, potentially causing more bone expansion/destruction, and displacing more teeth/structures. Removing it is more involved (a larger lesion and cavity, more bone removal, possible grafting). A larger size may also reflect a more advanced aggressive lesion.

What does the procedure involve?

A more involved jaw surgery — more access/bone removal to reach the larger lesion, removing it (enucleation/curettage, with more aggressive removal for aggressive types like keratocysts/ameloblastomas), managing the larger defect (possibly with grafting), and pathology. It's frequently done by an oral surgeon in a surgical setting, with follow-up for recurrence.

How much does it cost?

Often around 700 to 1,800+ USD, more than the small one (D7450), reflecting the more involved removal (more bone, a larger cavity, possible grafting). The pathology lab fee is separate. Aggressive types or large lesions may require more extensive surgery (and reconstruction), increasing the cost.

Do these lesions come back?

Some types are locally aggressive and prone to recurrence — notably odontogenic keratocysts and ameloblastomas — so they need thorough, complete removal (with adjunctive measures or more extensive surgery) and careful follow-up (periodic exams and imaging over years) to detect any recurrence early. The diagnosis (from pathology) guides the treatment and follow-up.

This page is an independent, plain-language explanation for general information only. It is not billing, coding, or clinical advice. For the official CDT descriptor and current-year wording, refer to the American Dental Association.