What D7320 means

D7320 covers alveoloplasty not in conjunction with extractions, four or more teeth or tooth spaces, per quadrant. "D" is dental, "73" is this oral surgery group, and "20" is this code. Like the other alveoloplasty codes, it's for alveoloplasty (the surgical recontouring/smoothing of the alveolar ridge). The distinction here is that it's not in conjunction with extractions — meaning the alveoloplasty is done as a separate procedure, not at the same time as removing teeth. This is typically the case when teeth were extracted previously (e.g., at an earlier visit, or some time ago), and now the ridge needs reshaping (e.g., to prepare for a denture, or to correct ridge irregularities that have remained) — done as a standalone alveoloplasty. D7320 is for this standalone alveoloplasty in a quadrant involving four or more teeth or tooth spaces.

So it's reshaping the bony ridge as a standalone procedure (not with extractions), in a quadrant with four or more teeth or tooth spaces — typically to prepare a previously-edentulous ridge for a prosthesis.

The alveoloplasty itself is the same kind of procedure (recontouring the ridge into a smooth contour) — D7320 specifies it's done not in conjunction with extractions and involves four or more teeth/spaces per quadrant. The parallel code D7321 is for one to three teeth/spaces per quadrant (not in conjunction with extractions). And the in-conjunction-with-extractions versions are D7310 (four or more) and D7311 (one to three). So D7320 is the standalone (no extractions), larger-extent (four or more) code. It's commonly used to prepare a ridge for a denture in an area where teeth were already removed (e.g., an older edentulous area being readied for a new denture). Documentation (the necessity, e.g., for a prosthesis, and that it's not at the time of extraction) supports the claim. Coverage is under oral surgery benefits (often related to prosthetic preparation).

When it's typically used

D7320 is reported for alveoloplasty (surgical reshaping of the alveolar ridge) performed not in conjunction with extractions — as a standalone procedure (typically where teeth were removed previously), in a quadrant involving four or more teeth or tooth spaces — usually to prepare the ridge for a prosthesis. It's distinct from the in-conjunction-with-extractions codes (D7310/D7311).

How much does D7320 cost?

Standalone alveoloplasty (four or more teeth/spaces per quadrant, not with extractions) is a moderate fee, often roughly 250 to 600 USD per quadrant depending on region — for the ridge recontouring done as a separate procedure. It's commonly part of preparing a previously-edentulous ridge for a denture. The fee is per quadrant.

Is D7320 covered by insurance?

Covered under oral surgery benefits (often as prosthetic preparation). Documentation of the necessity (e.g., preparing the ridge for a prosthesis, correcting ridge irregularities) and that the alveoloplasty was not performed at the time of extraction supports the claim. Many payers require a narrative explaining why it was necessary. D7320 is for four or more teeth/spaces per quadrant (one to three is D7321). Verifying coverage helps.

Standalone alveoloplasty (no extractions)

D7320 is for alveoloplasty done without extractions, and understanding this clarifies the distinction.

D7320 (and D7321) are for alveoloplasty performed not in conjunction with extractions — as a standalone procedure, not at the same time as removing teeth. This contrasts with D7310/D7311, which are for alveoloplasty done in conjunction with extractions (at the same time as removing teeth). So the key distinction is timing/context: D7320 is when the ridge reshaping is done on its own, separate from any extractions. This is typically the case when teeth were removed previously — at an earlier time — and now the ridge needs reshaping (the extractions having already happened, so the alveoloplasty is a separate, later procedure).

Common scenarios for standalone alveoloplasty: a patient had teeth removed some time ago and now the (edentulous) ridge needs reshaping to prepare for a denture (e.g., the ridge has irregularities, or wasn't smoothed at the time); or a ridge that healed with bony irregularities (sharp areas, undercuts) that now need correcting for a prosthesis or for comfort. In these cases, the alveoloplasty is done as its own procedure (not with extractions) — coded D7320 (for four or more teeth/spaces) or D7321 (one to three). So D7320 is the standalone alveoloplasty (not with extractions) for the larger extent. The dentist performs standalone alveoloplasty when the ridge needs reshaping apart from extractions. For patients, understanding that D7320 is for alveoloplasty done without extractions — as a standalone procedure, typically where teeth were removed previously — clarifies the distinction. It's done on its own. The dentist performs it separately. Understanding this helps patients see that D7320 is for alveoloplasty performed not in conjunction with extractions — the ridge reshaping done as a standalone procedure (not at the same time as removing teeth), typically in an area where teeth were removed previously and the ridge now needs reshaping (e.g., to prepare for a denture or correct irregularities) — distinct from the in-conjunction-with-extractions codes (D7310/D7311), with D7320 being the standalone version for four or more teeth/spaces per quadrant.

Four or more teeth/spaces; vs D7321

D7320 is for four or more teeth/spaces (vs D7321 for one to three), and understanding this clarifies the count.

Among the standalone alveoloplasty codes (not in conjunction with extractions), D7320 and D7321 differ by the number of teeth or tooth spaces involved per quadrant. D7320: four or more teeth or tooth spaces per quadrant. D7321: one to three teeth or tooth spaces per quadrant. So, parallel to the D7310/D7311 distinction (for the with-extractions codes), the standalone codes also split by extent: four or more → D7320; one to three → D7321. The code is reported per quadrant, with the count assessed per quadrant. So for standalone alveoloplasty, the dentist counts the teeth/spaces involved in the quadrant and codes D7320 (four or more) or D7321 (one to three).

The full set of four alveoloplasty codes: D7310 (with extractions, four or more), D7311 (with extractions, one to three), D7320 (not with extractions, four or more), D7321 (not with extractions, one to three). So two factors determine the code: whether it's in conjunction with extractions (D7310/D7311) or not (D7320/D7321), and the number of teeth/spaces (four or more vs one to three). D7320 is specifically the standalone, larger-extent code. Getting both factors right (extraction context and count) ensures correct coding. The dentist codes by both factors. For patients, understanding that D7320 is for four or more teeth/spaces (vs D7321 for one to three), within the standalone (no-extractions) codes, clarifies the count. It's the standalone, larger-extent code. The dentist codes by the count. Understanding this helps patients see that D7320 (four or more teeth/spaces) and D7321 (one to three) are the standalone alveoloplasty codes (not in conjunction with extractions), differing by the per-quadrant count — paralleling the with-extractions codes (D7310/D7311) — so the four alveoloplasty codes are determined by two factors (whether with extractions or not, and the tooth/space count), with D7320 being the standalone, four-or-more version.

Preparing a previously-edentulous ridge

D7320 often prepares a previously-edentulous ridge, and understanding this clarifies a common use.

A common use of standalone alveoloplasty (D7320) is preparing a previously-edentulous ridge for a prosthesis — and understanding this clarifies when it's used. When a patient had teeth removed in the past (the ridge now edentulous in that area), and a denture (or other prosthesis) is now planned, the ridge may need reshaping to be suitable — e.g., if it has irregularities, sharp areas, or undercuts that would interfere with the denture's fit or comfort. Standalone alveoloplasty reshapes the existing (previously-edentulous) ridge into a smooth, even contour for the prosthesis. So D7320 is used to ready an older edentulous ridge for a (new) denture — done as a separate procedure (since the teeth were removed previously, not at this time).

This is distinct from the with-extractions scenario (D7310/D7311), where the alveoloplasty is done at the same time as removing the teeth (e.g., for an immediate denture). With D7320, the extractions already happened (previously), and the alveoloplasty is now done to prepare the existing ridge. This might be needed when, e.g., a patient is getting a denture for the first time for an area edentulous for a while, or replacing/improving a denture and the ridge needs reshaping. So preparing a previously-edentulous ridge is a key use of D7320. The dentist performs standalone alveoloplasty to ready the existing ridge. For patients, understanding that D7320 often prepares a previously-edentulous ridge — reshaping an existing edentulous ridge for a denture — clarifies a common use. It readies an older ridge for a prosthesis. The dentist does it separately. Understanding this helps patients see that a common use of D7320 is preparing a previously-edentulous ridge for a prosthesis — reshaping an existing edentulous ridge (where teeth were removed in the past) into a smooth contour suitable for a denture — done as a standalone procedure (since the extractions already happened), distinct from the with-extractions scenario (immediate dentures), to ready an older ridge for a (new or improved) prosthesis.

Documentation for standalone alveoloplasty

Documentation supports standalone alveoloplasty, and understanding it clarifies the billing.

Documentation is important for standalone alveoloplasty (D7320) to support the claim — and understanding it clarifies the billing. Since D7320 is a standalone procedure (not bundled with an extraction at the same visit), the bundling concern is different from D7310/D7311, but payers still want to see justification for the alveoloplasty. The documentation should establish: the necessity — why the alveoloplasty was needed (e.g., to prepare the ridge for a prosthesis, to correct bony irregularities/undercuts that interfere with function or comfort); that it was not in conjunction with extractions — confirming the alveoloplasty was a standalone procedure (not at the time of an extraction), supporting the use of D7320 (versus D7310); the area treated and the tooth/space count (four or more for D7320); and the procedure performed (the ridge recontouring).

Supporting documentation includes the clinical notes (describing the area, the recontouring, and why it was necessary), a narrative (explaining the necessity, e.g., for the prosthesis), and radiographs/photos when possible (showing the ridge irregularities and the need for reshaping). Many payers require a narrative explaining why the alveoloplasty was necessary and confirming it was not performed at the time of extraction. So thorough documentation (necessity, standalone nature, count) supports D7320. The dentist's office documents the procedure and its necessity. For patients, understanding that documentation supports standalone alveoloplasty — establishing its necessity, standalone nature, and extent — clarifies the billing. The necessity must be documented. The office documents it. Understanding this helps patients see that for standalone alveoloplasty (D7320), thorough documentation supports the claim — establishing why it was necessary (e.g., to prepare the ridge for a prosthesis or correct irregularities), confirming it was not performed at the time of an extraction (supporting D7320 over the with-extractions codes), and the area/count (four or more) — with many payers requiring a narrative explaining the necessity, so clear documentation of the standalone alveoloplasty and its purpose supports appropriate coverage.

Frequently asked questions

What is the D7320 dental code?

It's alveoloplasty not in conjunction with extractions, four or more teeth or tooth spaces per quadrant — the surgical reshaping of the alveolar ridge done as a standalone procedure (not at the same time as extractions), typically where teeth were removed previously, in a quadrant involving four or more teeth/spaces, usually to prepare the ridge for a prosthesis.

How is it different from D7310?

D7310 is alveoloplasty in conjunction with extractions (at the same time as removing teeth). D7320 is alveoloplasty not in conjunction with extractions (a standalone procedure, typically where teeth were removed previously). Both are for four or more teeth/spaces per quadrant — the difference is whether it's done with extractions or separately.

How is it different from D7321?

Both are standalone alveoloplasty (not with extractions), differing by the count per quadrant. D7320 is for four or more teeth or tooth spaces; D7321 is for one to three. The code is reported per quadrant, chosen by the number of teeth/spaces involved.

When is standalone alveoloplasty done?

Typically when teeth were removed previously (at an earlier time) and the ridge now needs reshaping — e.g., to prepare a previously-edentulous ridge for a denture, or to correct ridge irregularities (sharp areas, undercuts) that interfere with a prosthesis or comfort. It's done as its own procedure (not with extractions).

How much does it cost?

Often around 250 to 600 USD per quadrant for the ridge recontouring done as a separate procedure. It's commonly part of preparing a previously-edentulous ridge for a denture. The fee is per quadrant (and varies with the extent and region).

What documentation is needed?

Documentation of the necessity (e.g., preparing the ridge for a prosthesis, correcting irregularities), confirmation that it was not performed at the time of an extraction (supporting D7320 over D7310), and the area/count (four or more). Many payers require a narrative explaining why it was necessary.

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.