D7943 — Osteotomy — mandibular rami with bone graft
D7943 is that same ramus osteotomy with a bone graft added to bridge the gap the movement creates.
One of ten orthognathic surgery codes. If you are trying to understand the treatment, start with the orthognathic surgery guide; if you are trying to understand this line on your estimate, you are in the right place.
Everything on this page is about the code itself — its conditions, its fee, its benefit handling, and the precise point at which it stops applying and a neighbouring code starts.
What D7943 specifies
Arch — lower. The bone is denser, but there is far less surface area to support anything removable and the nerve running through the jaw limits how aggressive surgery can be.
Where the line falls between D7943 and the rest
D7944 — Osteotomy — segmented or subapical: It cuts out and repositions a block of jaw carrying a few teeth, rather than moving a whole jaw.
D7941 — Osteotomy — mandibular rami: It cuts through the vertical part of the lower jaw behind the teeth so that the whole jaw can be moved.
D7945 — Osteotomy — body of mandible: It cuts through the body of the lower jaw, forward of the ramus, in order to reposition it.
D7940 — Osteoplasty — for orthognathic deformities: It reshapes the jaw bone to correct a deformity, without cutting it into segments and repositioning it.
D7943 sits in a group of ten codes in total; the remainder are linked at the foot of this page. The descriptions differ by a few words and the fees differ by a great deal, which is why mixing them up is one of the commonest billing errors in dentistry. Ask which of these codes is being submitted and why.
Every code in this group
These codes describe the same broad procedure and differ in one respect each. Each has its own page with its own fee range and coverage notes.
| Code | Procedure |
|---|---|
| D7943 | Osteotomy — mandibular rami with bone graft — this page |
| D7940 | Osteoplasty — for orthognathic deformities |
| D7941 | Osteotomy — mandibular rami |
| D7944 | Osteotomy — segmented or subapical |
| D7945 | Osteotomy — body of mandible |
| D7946 | LeFort I (maxilla — total) |
| D7947 | LeFort I (maxilla — segmented) |
| D7948 | LeFort II or LeFort III — without bone graft |
| D7949 | LeFort II or LeFort III — with bone graft |
| D7991 | Coronoidectomy |
Questions about D7943
What procedure is D7943?
D7943 records osteotomy, mandibular rami with bone graft — one of the oral and maxillofacial surgery codes.
Is D7943 expensive?
$5,000–$15,000 is the realistic range before benefits. Your own share depends on your plan's percentage, deductible and remaining annual maximum.
Will my plan pay for D7943?
Yes on most policies, treated as medical work at variable. A waiting period on a new policy is the commonest reason it is not.
What is the difference between D7943 and D7944?
D7944 is osteotomy, segmented or subapical: it cuts out and repositions a block of jaw carrying a few teeth, rather than moving a whole jaw. These are not two versions of one procedure: they are separate treatments, and a plan assesses each on its own merits.
Also known as: jaw surgery, orthognathic surgery, LeFort osteotomy, underbite surgery, bite correction surgery.