D6112 is the CDT code for a removable partial denture retained by implants or attachment abutments on an upper arch that still has natural teeth.
- When to use: Implants or attachment abutments, not just clasps on natural teeth, retain the removable partial on an upper arch with teeth remaining.
- When not to use: A clasp-retained upper cast partial is D5213, a fully edentulous upper is D6110, a fixed version is D6116, and the lower is D6113.
- Billing note: Plans that cover implants often pay only the conventional partial allowable, so verify the alternate benefit and build the estimate on it.
What D6112 covers
D6112 reports delivery of a removable partial denture on an upper arch that still has some natural teeth, where implants or attachment abutments carry the prosthesis. The patient takes it in and out at home. It snaps onto attachments on the implants or clips onto a bar they support.
The code covers the prosthesis for that arch only. It does not report:
- The surgical placement of the implant bodies, which is D6010 per implant.
- The retention hardware. D6191 places the semi-precision abutment on the implant; D6192 lutes the matching attachment into the partial.
- A connecting bar, which is D6055 when the design uses one.
- Converting a partial the patient already owns. If nothing new was fabricated and the dentist picked up housings in the existing prosthesis, that is D5875.
- Later maintenance, relines, or repairs (see the last section).
The grid: three questions, eight codes
D6112 sits in a 2x2x2 grid of implant-denture codes. Three answers place any case in one cell.
| Edentulous upper | Edentulous lower | Partial upper | Partial lower | |
|---|---|---|---|---|
| Removable | D6110 | D6111 | D6112 | D6113 |
| Fixed | D6114 | D6115 | D6116 | D6117 |
- Removable or fixed? Removable means the patient takes it out. Fixed means only the clinician removes it, which includes screw-retained hybrids. The fixed code for the same arch and edentulous status is D6116.
- Edentulous or partially edentulous? Partially edentulous means natural teeth remain on that arch. The fully edentulous upper removable code is D6110.
- Maxillary or mandibular? The lower twin is D6113.
One edge case sits outside the grid. CDT 2026 added resection prosthesis codes, and D5944 covers the maxillary implant/abutment supported removable prosthesis for a partially edentulous arch after a resection. If the arch was surgically resected, that maxillofacial code applies, not D6112.
The two codes that look like D6112
D5213 and the conventional partial codes. The deciding factor is what carries the prosthesis, not what it is made of. D5213 is an upper cast metal partial retained by clasps and rests on the natural teeth. D5211 is the resin-base version and D5225 the flexible one. When implants or attachment abutments do the retaining, the case is D6112 regardless of the framework.
The reverse error also happens. A clasp-retained partial does not become D6112 because the patient has implants elsewhere in the arch. The implants have to retain or support the prosthesis.
D5864, the natural-tooth partial overdenture. This is the upper partial over retained natural tooth roots. CDT 2026 added “natural tooth borne” to the nomenclature of D5863 through D5866, so the code now states on its face that it does not apply when implants carry the partial.
These codes describe similar-looking prostheses on the same arch, so keep them apart in the PMS pick list. The dental implant codes guide shows where D6112 sits among the removable and fixed implant dentures.
Coverage and how carriers treat it
All of this varies by contract. Verify it at treatment planning, not at delivery.
Implant coverage. A contract with no implant benefit denies D6112 along with the surgical codes. No appeal overturns a categorical exclusion, so address it in the financial arrangement before surgery.
Alternate benefit to a conventional partial. Plans that cover implants often pay the allowable for a standard removable partial and treat the implant retention as an upgrade, leaving the patient the difference. This is a plan-design payment, not a denial, and it is the most common reason a D6112 payment falls short of the estimate.
The missing-tooth clause. Plans commonly exclude teeth lost before the policy started. On a partially edentulous arch this is decided tooth by tooth, so extraction history matters more than on a fully edentulous case.
Predetermination. Implant prosthetics often require preauthorization. Submitting without it draws a denial for no prior approval even when the case would otherwise pay.
Clinical criteria on the implants. UnitedHealthcare’s dental clinical policy on implant supported prostheses, effective April 2026, expects the implant to be fully osseointegrated, not mobile, free of infection, and with an implant-to-crown ratio appropriate to the site. Other carriers publish similar criteria.
Documentation that supports the claim
- The arch and its edentulous status, written as a partially edentulous maxilla with the remaining teeth identified. This separates D6112 from D6110.
- That the prosthesis is removable, which separates it from D6116.
- The retention design: how many implants, attachments or a bar, and which teeth, if any, also carry clasps or rests.
- Why the implants were needed. The carrier’s question on a partially edentulous arch is why a conventional partial would not serve, so name the span, the abutment condition, or the stability problem.
- Extraction history for the missing teeth, which a missing-tooth-clause review turns on.
For how the arch, teeth, and remarks are entered on the claim, see the ADA dental claim form guide.
After delivery: maintenance, relines, and repairs
Partial-arch cases use different follow-up codes than full-arch cases, which catches offices that learned the full-arch workflow first.
- Routine cleaning and inspection of the partial is D9934 on the upper arch. D6280 is written for a full arch removable implant denture, and D6080 is the full arch fixed hybrid code, so neither applies.
- The natural teeth are cleaned under the usual prophylaxis or periodontal maintenance code. A single implant with inflammation or mucositis is D6081, and peri-implantitis with bone loss is D6049, new for 2026. Neither implant code is reported the same day as a prophylaxis or periodontal maintenance.
- A worn retention insert is D6091, per attachment. Replacing the entire damaged housing is D6192. D5867 is the natural-tooth version and a common miscode here.
- Relines and rebases have no implant-specific codes. Use the conventional partial codes for the arch, such as D5740 chairside or D5760 in the laboratory on the upper.
- Other repairs to the prosthesis are D6090, the repair code for an implant or abutment supported prosthesis. Include a narrative with the original placement date and what broke and was repaired.
FAQs
- What is the dental code for an implant-retained upper partial denture?
- D6112, when the upper arch still has natural teeth and the partial is removable and retained or supported by implants or attachment abutments. The lower-arch version is D6113. A fully edentulous upper arch is D6110, and a fixed prosthesis on a partially edentulous upper arch is D6116.
- What is the difference between D6112 and D5213?
- What carries the prosthesis. D5213 is a conventional upper cast metal partial retained by clasps and rests on the natural teeth. D6112 is the removable upper partial retained by implants or attachment abutments, so the record has to name the implants and the attachment design. Many plans pay D6112 at the D5213 or D5211 allowable as an alternate benefit, but that is a payment decision, not a reason to bill the conventional code.
- What is the difference between D6112 and D5864?
- D5864 is natural tooth borne and D6112 is implant borne. D5864 is an upper partial overdenture over retained natural tooth roots, usually with precision attachments in those roots. CDT 2026 added natural tooth borne to the nomenclature of D5863 through D5866, which removes the ambiguity that let implant cases be reported on D5864.
- Does D6112 include the implants, abutments, and attachments?
- No. D6112 is the removable prosthesis only. Implant bodies are billed separately, most often D6010 per implant. D6191 places the semi-precision abutment on the implant and D6192 lutes the matching attachment into the partial. A connecting bar is D6055, reported once no matter how many implants carry it, with each clip in the partial reported as D6192.
- Can I bill D6280 for maintenance on a D6112 partial?
- No. D6280, new in CDT 2026, is written for a full arch removable implant denture, so an arch with natural teeth falls outside it. D6080, the full arch fixed hybrid code, does not fit either. Cleaning and inspection of the upper partial is D9934, the natural teeth are cleaned under the usual prophylaxis or periodontal maintenance code, and a single inflamed implant is D6081, or D6049 with peri-implantitis and bone loss.
- Why did the plan deny or downgrade D6112?
- Usually for plan-dependent reasons worth verifying before treatment planning: an implant exclusion, a missing-tooth clause on teeth lost before the policy started, an alternate benefit toward a conventional partial, or a missing predetermination. Some carriers also apply clinical criteria. UnitedHealthcare's dental clinical policy on implant supported prostheses expects the implant to be fully osseointegrated, stable, and free of infection before the prosthesis is considered.
Related codes
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CDT codes are maintained by the American Dental Association. This page is an editorial billing guide, not the official ADA code descriptor. Verify current coverage policies with each carrier before submitting claims.