Jaw Cysts and Tumours: Removal, Biopsy and Recovery
Cysts in the jaws are fluid-filled cavities lined with epithelium, and most are odontogenic — derived from tooth-forming tissue. A radicular cyst forms at the root tip of a dead tooth; a dentigerous cyst forms around the crown of an unerupted tooth; a keratocyst behaves more aggressively and recurs. Non-odontogenic cysts arise from other tissue. Benign tumours such as ameloblastomas and odontomas occupy the same territory surgically.
What cyst and tumour removal involves
Cysts in the jaws are fluid-filled cavities lined with epithelium, and most are odontogenic — derived from tooth-forming tissue. A radicular cyst forms at the root tip of a dead tooth; a dentigerous cyst forms around the crown of an unerupted tooth; a keratocyst behaves more aggressively and recurs. Non-odontogenic cysts arise from other tissue. Benign tumours such as ameloblastomas and odontomas occupy the same territory surgically. Removal is graded by size, with a threshold at 1.25 centimetres, and by whether the lesion is odontogenic. Marsupialisation is an alternative approach for large cysts: rather than removing the whole lining, an opening is made so the cavity drains and gradually shrinks, allowing a smaller definitive removal later.
When this treatment is used
Most jaw cysts are found incidentally on a radiograph taken for another reason, which is a strong argument for periodic imaging. Symptomatic ones present with swelling, displaced teeth, altered sensation, or a pathological fracture.
Why the diagnosis matters more than the size
Jaw lesions that look similar on a radiograph behave very differently. A radicular cyst resolves after the offending tooth is treated or removed and rarely recurs. A keratocyst recurs in a substantial proportion of cases and needs long-term follow-up and sometimes more aggressive removal. An ameloblastoma is a benign tumour that is locally destructive and requires resection with margins. That is why these lesions are biopsied and diagnosed rather than simply removed and forgotten. A patient told they had a cyst removed ten years ago should know which kind, because for some of them surveillance imaging continues for years.
Costs and insurance in summary
Typical fee range across the group: $0–$0 where a single band applies. Several codes here are priced individually and carry their own range on their own page. Priced by size and complexity. Larger lesions and resections are usually hospital procedures claimed through medical insurance.
Benefit category: Major oral surgery / medical, variable on a typical plan. Smaller lesions are usually a dental surgical benefit; larger resections are medical. Pathology fees are separate.
Common restrictions: Larger resections are normally a medical claim; Pathology laboratory fees are billed separately; Pre-authorisation usually required.
The codes this guide covers
Each of these describes a variant of the same procedure. Follow a code for its own fee range, its coverage notes and what distinguishes it from the rest of the group.
| Code | Variant | Typical fee |
|---|---|---|
| D7450 | Removal of benign odontogenic cyst or tumor — up to 1.25 cm — most reported | $700–$1,800 |
| D7451 | Removal of benign odontogenic cyst or tumor — greater than 1.25 cm | $1,300–$3,500 |
| D7460 | Removal of benign nonodontogenic cyst or tumor — up to 1.25 cm | $700–$1,800 |
| D7461 | Removal of benign nonodontogenic cyst or tumor — greater than 1.25 cm | $1,300–$3,500 |
| D7490 | Radical resection of maxilla or mandible | $5,000–$20,000 |
| D7509 | Marsupialization of odontogenic cyst | $600–$1,600 |
| D7530 | Removal of foreign body — from mucosa, skin, or subcutaneous alveolar tissue | $300–$800 |
| D7540 | Removal of reaction-producing foreign bodies — musculoskeletal system | $600–$1,600 |
Common questions
How are jaw cysts found?
Most are discovered incidentally on a radiograph taken for another reason. Symptomatic ones present with swelling, displaced teeth, numbness or a fracture.
Do jaw cysts come back?
It depends entirely on the type. Radicular cysts rarely recur once the source tooth is treated; keratocysts recur in a substantial proportion of cases and need years of follow-up imaging.
Is a jaw cyst cancer?
Cysts are not cancer, but some jaw lesions that look similar on a radiograph are locally destructive tumours. That is why the tissue is always sent for microscopic diagnosis.