Oral Surgery Codes (D7000–D7999)

The extraction codes, in order of difficulty

D7140, simple extraction. The tooth is visible, grippable, and comes out with forceps and elevators. No incision, no bone removal. $150–$400.

D7210, surgical extraction. The tooth needs an incision in the gum, or bone removal, or sectioning of the tooth into pieces to get it out. The commonest reason is a tooth that has broken at the gum line, or roots that curve. $250–$650.

D7220–D7241, impacted teeth. A tooth that has not erupted, coded by how far it is buried: soft tissue impaction, partial bony, complete bony, and complete bony with unusual surgical complications. $300–$900 depending on depth.

D7250, removal of residual root. Retrieving a root fragment left behind from a previous extraction. The escalation is genuine. A completely bony impacted lower wisdom tooth close to the nerve canal is a different procedure from lifting out a loose molar, and it carries different risks. Where a code higher up this list is used, the operative note should describe what made it necessary — and payers increasingly ask to see that note.

Wisdom teeth: the decision, honestly

Removing wisdom teeth that are causing problems is uncontroversial. Removing asymptomatic ones prophylactically is genuinely debated, and the answer has shifted over the past two decades towards watching rather than removing.

Clear reasons to remove: recurrent pericoronitis (infection in the gum flap over a partly erupted tooth), decay in the wisdom tooth or the molar in front of it, a cyst forming around it, gum disease developing behind the second molar, or the tooth biting into the cheek.

Reasons that no longer stand up well on their own: preventing front-tooth crowding, which the evidence does not support; and "they will cause trouble eventually", which is true for some and not for others.

Reasons to be cautious: lower wisdom teeth sitting on the inferior alveolar nerve, where permanent numbness of the lip and chin is a real if uncommon outcome, and upper ones close to the sinus. Age matters too — recovery in the late teens and early twenties is substantially easier than at forty, which is the strongest argument for acting earlier when removal is indicated at all. A cone beam scan before removal of a deeply impacted lower wisdom tooth is usually worth it, because it shows the relationship to the nerve that a flat radiograph cannot.

After an extraction: healing, dry socket, and what to actually do

A blood clot forms in the socket within the first hour, and everything about aftercare is aimed at keeping it there. No rinsing, no spitting, no straws and no smoking for twenty-four hours, because suction and pressure dislodge it.

Dry socket is what happens when the clot is lost: a deep, throbbing ache starting on day three to five, often radiating to the ear, with a bad taste and an empty-looking socket. It affects a few percent of extractions and far more in smokers. It is not an infection and antibiotics do not treat it — a medicated dressing placed by the practice relieves it, usually within an hour, and may need repeating. Normal healing: bleeding stops within a few hours, swelling peaks at forty-eight to seventy-two hours, soft tissue closes over in one to two weeks, and the bone fills in over three to six months. Things that warrant a call: bleeding that will not stop after firm pressure for twenty minutes, swelling that is spreading rather than settling after day three, fever, or difficulty swallowing or opening. And a point people miss: the ridge shrinks fastest in the first six months after an extraction. If you intend to have an implant later, a socket graft at the time of extraction (D7953, $400–$1,200) preserves bone that is expensive to rebuild afterwards. That decision has to be made on the day, not later.

Biopsies and the three-week rule

The biopsy codes (D7285–D7288) exist for one reason worth stating plainly: any ulcer, white patch, red patch or lump in the mouth that has not resolved in three weeks should be examined, and biopsied if there is any doubt. Most such lesions are harmless — trauma from a sharp tooth, a fungal infection, lichen planus. But oral cancer caught early has a five-year survival around 80–90%, and caught late around 30–50%, and the difference between those two numbers is mostly measured in months of delay. A brush biopsy (D7288) samples surface cells and is a screening test. An incisional biopsy (D7286) removes a piece of the lesion for histology and is the definitive one. If you are offered "watch and wait" on something that has already been present for three weeks, asking for a specialist opinion is reasonable.

When the medical plan pays instead of the dental plan

Large parts of the D7 range are covered by medical insurance rather than dental, and claiming to the wrong one is the main reason patients in this range face unexpected bills. Typically medical: facial fractures (D7610–D7780), tumour and cyst removal (D7440–D7465), orthognathic surgery (D7940–D7996), temporomandibular joint surgery (D7810–D7899), biopsies where malignancy is suspected, and any surgery performed in a hospital or under general anaesthesia for a medical reason. Typically dental: extractions, impacted teeth, alveoloplasty, socket grafting and frenectomies. The grey area is large, and the practical advice is the same in every case: establish which plan is primary before surgery, get pre-authorisation from it, and ask the surgeon's office to file it with the medical diagnosis code rather than only a dental one.