D7991 — Coronoidectomy
Orthognathic surgery repositions the jaws.
There are ten codes for orthognathic surgery and they are not interchangeable. This page covers this one; the orthognathic surgery guide covers the treatment they all share.
What the code requires, what it costs, how it is paid, and how to tell it from its neighbours — each in its own section below.
Told apart from the codes it is confused with
D7949 — LeFort II or LeFort III — with bone graft: It is that same midface osteotomy with bone grafting, normally needed where the advancement is large.
D7948 — LeFort II or LeFort III — without bone graft: It is the LeFort II or III osteotomy, which moves the midface rather than the upper jaw alone, with no grafting.
D7947 — LeFort I (maxilla — segmented): It is the LeFort I done in segments, so that the width and the arch form can be altered as well as the position.
D7946 — LeFort I (maxilla — total): It is the LeFort I osteotomy, which frees the whole upper jaw in one piece and repositions it.
D7991 sits in a group of ten codes in total; the remainder are linked at the foot of this page. Because the wording of these codes is so close, substituting one for another is a routine cause of rejected claims and of unexpected balances. If D7991 is on your estimate, it is worth confirming that the detail it specifies matches what is actually planned.
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.
Questions about D7991
What procedure is D7991?
On a claim, D7991 tells the insurer that what was performed was coronoidectomy.
What is the typical fee for D7991?
Most private fees fall in $5,000–$15,000. Geography accounts for more of that spread than anything clinical.
Does dental insurance cover D7991?
Plans generally pay it as medical treatment, variable, subject to whatever is left of your maximum for the year.
Also known as: jaw surgery, orthognathic surgery, LeFort osteotomy, underbite surgery, bite correction surgery.