Collagen Plug Dental Code: CDT D7922, FDA Product Codes and SKUs

General product and coding information for dental office, supply and procurement staff. It is not medical, dental or billing advice and does not describe how any product is placed.

Short answer

There is no single “collagen plug code.” The dental code that describes placing a dressing in an extraction socket to help control bleeding is CDT D7922, “placement of intra-socket biological dressing to aid in hemostasis or clot stabilization, per site,” as listed in UnitedHealthcare’s dental policy DCP047.05 (effective May 1, 2026). The plug as a product carries different identifiers: an FDA product code and a supplier SKU. Payers decide coverage, so confirm the descriptor in the current CDT manual and the payer’s own policy.

Definition and scope

Three different kinds of “code” are often mixed up when someone searches for the dental code for a collagen plug:

• Procedure code (CDT). Describes a service. CDT is the Code on Dental Procedures and Nomenclature, and the American Dental Association states it assures consistency in documenting dental treatment (ADA CDT page, checked 2026-11-01). CDT is a registered trademark of the ADA, and full descriptors are in the paid manual.
• FDA product code. A three-letter code FDA assigns to a type of device for classification and premarket records. It identifies the device category, not a billable service.
• Supplier SKU or catalog number. A seller’s own inventory number. It says nothing about billing or regulatory category.

This page covers the dental collagen plug or dressing used in tooth sockets. It is a different product from eye punctal plugs; for those see collagen punctal plugs.

How payers describe intra-socket dressings

UnitedHealthcare Dental Clinical Policy DCP047.05, “Biologic Materials for Dental Indications” (effective May 1, 2026; checked 2026-11-01), is one payer’s policy and should not be generalised to others. It states:

• Intra-socket biological dressings following an extraction “include products made of gelatin, collagen, and cellulose for soft tissue bleeding, and bone wax for cancellous bone bleeding,” and are “typically considered inclusive to the primary extraction procedure.”
• The code list is “provided for reference purposes only”; listing a code does not imply coverage or any right to reimbursement.

D7922 vs D4265

Both codes appear in the same UnitedHealthcare policy, and they are not interchangeable.

CDT code	Descriptor in the policy	Materials the policy names
D7922	Placement of intra-socket biological dressing to aid in hemostasis or clot stabilization, per site	Dressings of gelatin, collagen or cellulose; bone wax for cancellous bone bleeding
D4265	Biologic materials to aid in soft and osseous tissue regeneration, per site	Enamel matrix derivative and bioactive glass are listed as indicated; BMP, amniotic membranes and stem cells are not

Aetna’s Dental Clinical Policy Bulletin DCPB005 (last updated July 21, 2025; checked 2026-11-01) also lists D4265 and describes biologic materials as including Emdogain, BMP-2 and GEM-21. It does not mention collagen plugs or extraction sockets, so it gives no basis for assigning a plug to either code. Third-party billing pages that say plugs are billed under D4265 are not primary sources and are not repeated here.

FDA product codes for collagen dental products

FDA’s openFDA classification database (checked 2026-11-01) separates collagen dental products into different categories, which is why one product name can map to several codes:

FDA product code	Name in openFDA	Class	What the record says
KGN	Wound Dressing With Animal-Derived Material(s)	Unclassified (U)	No regulation number listed
OLR	Oral Wound Dressing	Unclassified (U)	Physical barrier for temporary protection of oral mucosal tissue
NPL	Barrier, Animal Source, Intraoral	2	21 CFR 872.3930; collagen-type barrier for guided tissue/bone regeneration and containing bone graft material

A collagen barrier membrane (NPL) is a different device category from a plug-style dressing. For background on the agency, see the FDA (Food and Drug Administration) entry; the history behind device classes is in the Medical Device Amendments of 1976 entry.

What a supplier record should show

The NLM AccessGUDID record for the Newport Biologics Resorbable Collagen Plug (device identifier D74570BIODWD100; checked 2026-11-01) shows how product data is organised: FDA product code KGN, GMDN term 47184 “General oral wound dressing, animal-derived,” supplied sterile, single-use, packaged as 10 per box. Using the record’s own fields, a documentation checklist for any collagen plug is:

1. FDA product code and device name (compare with the table above).
2. GUDID device identifier (DI) and the GMDN term.
3. Sterile and single-use status as stated on the record.
4. The latex field and any other labeling fields on the record.
5. The manufacturer’s instructions for use, which govern how the product is handled.
6. Package quantity, kept separate from the procedure code used for the service.

Each item comes from a field on the GUDID record; none of them is a billing code.

Common misunderstandings

• “The FDA code is the billing code.” It is not. KGN, OLR and NPL classify devices; CDT codes describe procedures.
• “A SKU tells you the code.” A SKU is a seller’s inventory number.
• “A collagen plug and a collagen barrier membrane are the same device.” openFDA files them under different product codes (for example KGN or OLR for dressings and NPL for barriers).
• “D7922 guarantees payment.” The policy states that a listed code does not imply coverage.
• “All payers treat it the same.” This page cites one payer’s policy dated May 2026.

FAQ

What is the dental code for a collagen plug?

The CDT code whose descriptor covers placing an intra-socket biological dressing to aid hemostasis or clot stabilization is D7922. UnitedHealthcare’s DCP047.05 (effective May 1, 2026) lists collagen among the dressing materials and says such dressings are typically considered inclusive to the extraction. Check the current CDT manual and the specific payer.

Is a collagen plug billed under D4265?

The UnitedHealthcare policy associates D4265 with regenerative biologic materials such as enamel matrix derivative and bioactive glass, not with hemostatic dressings. Aetna’s DCPB005 lists D4265 but does not discuss plugs.

Does the FDA product code tell me the dental code?

No. FDA product codes classify devices; CDT codes describe services.

Is the dental collagen plug the same as an eye punctal plug?

No. See collagen punctal plugs for the ophthalmic product. Wound-closure materials are covered separately in what is a suture.

Sources

All sources below were checked on 2026-11-01.

• UnitedHealthcare Dental Clinical Policy DCP047.05, Biologic Materials for Dental Indications, effective May 1, 2026 (PDF), checked 2026-11-01.
• Aetna Dental Clinical Policy Bulletin DCPB005 (aetna.com), updated July 21, 2025, checked 2026-11-01.
• American Dental Association, CDT, checked 2026-11-01.
• NLM AccessGUDID, device D74570BIODWD100, checked 2026-11-01.
• FDA openFDA, device classification (product codes KGN, OLR, NPL), checked 2026-11-01.