D5611 is the CDT code for repairing the broken resin base of a lower (mandibular) partial denture — fixing a cracked or fractured acrylic base so the patient can keep using their existing partial. It addresses the resin base, not the metal framework, clasps, or teeth.
Informational only — confirm the official CDT descriptor and your payers' rules independently. This is general guidance, not billing, coding, or clinical advice.
When to Use the D5611 Code
Report D5611 when the resin (acrylic) base of a mandibular partial denture is cracked or fractured and is repaired rather than the partial being remade. The break is in the pink resin base material itself, and the repair restores its integrity.
Pick the code by arch and component: D5611 is the mandibular resin partial base repair; D5612 is the maxillary resin partial base repair; D5621/D5622 repair a cast metal framework (lower/upper); and D5511/D5512 repair a complete denture base. D5611 also replaced the older single code D5610 in the 2018 CDT update, so report the arch-specific code. If a clasp or tooth is repaired or added, that's a separate procedure.
Documentation & Clinical Scenarios
A repair is a small procedure, but clear notes support the claim and any review:
- Arch and prosthesis — note this is a mandibular partial with a resin base.
- The fracture — location and type of break in the resin base, and how it occurred if known.
- What was done — the resin base repair performed and the result.
- Before/after photos where practical, especially for a significant fracture.
If a clasp was repaired (D5630), a tooth added (D5650), or a clasp added (D5660), report those separately with their own codes when performed alongside the base repair.
Insurance & Billing Tips
- Verify the repair benefit. Confirm the plan covers partial-denture base repairs and the patient's share.
- Watch frequency limits. Some plans limit how often a repair is payable and may scrutinize repeat repairs on the same partial.
- Report the correct arch and component. Use D5611 for the lower resin base; framework repairs and complete-denture repairs have different codes.
- Don't bundle separate work. Clasp repairs, tooth additions, and relines are separate procedures — report them on their own rather than rolling them into the base repair.
- Consider replacement economics. Repeated repairs on an aging partial may indicate it's time for a remake; document the condition either way.
Example Case
A patient's lower partial denture cracks through the resin base after years of use, though the metal framework and clasps are intact. The dentist repairs the fractured acrylic base in the lab, with no clasps or teeth replaced. The visit is coded D5611 with a note describing the resin-base fracture and the repair, plus a photo of the break. Because the plan covers partial-denture base repairs and the documentation is clear, the claim is filed for the mandibular resin partial base repair without issue.
Patients call about "my partial cracked" or "my lower partial broke" — not D5611. DentalReception AI answers those calls 24/7, captures the urgency, and books the repair visit live into your schedule, while clinical and coverage questions route to your team. See how it handles denture calls, or book a demo.
Frequently Asked Questions
What's the difference between D5611 and D5621?
Component. D5611 repairs the broken resin base of a lower partial denture, while D5621 repairs the cast metal framework of a lower partial. They address different parts of the same prosthesis and are reported separately. If both the resin base and the framework are repaired, document and bill each with its own code.
What's included in a D5611 repair, and what isn't?
D5611 covers repairing the broken resin base of a mandibular partial. It does not include repairing or adding a clasp (D5630/D5660), adding a replacement tooth (D5650), repairing the cast framework (D5621), or relining — those are separate procedures with their own codes and should be documented and billed separately when performed.
How often will insurance cover a partial repair?
It varies by plan. Many payers cover occasional repairs but apply frequency limits and may question repeated repairs on the same partial, since frequent breaks can suggest the prosthesis should be remade. Verify the repair benefit and any frequency limit before billing, and document the fracture clearly.
Do I need a pre-authorization for D5611?
A pre-authorization usually isn't required for a straightforward resin-base repair, but a quick benefit check confirms coverage and any frequency limit. Documenting the fracture location and cause — ideally with a photo — and reporting the correct mandibular resin-base code supports the claim if the payer reviews it.
Confirm the current CDT descriptor and your specific payer policies before billing — browse the full dental code library or see our insurance verification feature.