D2663 — Composite onlay — three surfaces
An onlay is a lab-made or milled restoration that covers one or more cusps of a back tooth. D2663 is the three-surface version.
This code belongs to a set of nine covering onlay. The clinical detail lives in the onlay guide; the code-level detail is here.
Three things matter when this code turns up on paperwork: what it obliges the practice to have actually done, what it is worth, and which nearby code it is not. All three are set out below.
The conditions built into D2663
Extent — three surfaces. Three surfaces is the point at which a dentist starts weighing a filling against a crown or onlay, because the remaining tooth structure is thin enough to flex under load.
Material — tooth-coloured composite resin. Composite is a resin filled with glass particles, placed soft and hardened with a blue curing light in layers. It bonds chemically to enamel and dentine, so the preparation can follow the decay instead of being cut to a retentive shape, and less sound tooth is lost. The trade-offs are technique sensitivity — the tooth has to be dry and isolated for the bond to work — and a shorter working life than amalgam under heavy chewing load, typically seven to twelve years on a back tooth. The material is part of the code rather than a choice made afterwards, so D2663 is only the right code if that is what was actually used.
Counted — per site rather than per tooth. What counts as a single site is the detail that gets argued about on these claims.
D2663 against the codes beside it
D2662 — Composite onlay — two surfaces: It covers two surfaces instead of three surfaces.
D2664 — Composite onlay — four or more surfaces: It covers four or more surfaces instead of three surfaces.
D2644 — Porcelain onlay — four or more surfaces: It covers four or more surfaces instead of three surfaces.
D2643 — Porcelain onlay — three surfaces: It specifies porcelain rather than tooth-coloured composite resin.
D2663 sits in a group of nine codes in total; the remainder are linked at the foot of this page. If an estimate lists D2663 and the treatment that follows matches a neighbouring code instead, the office has to resubmit — which delays the payment rather than increasing it.
Every code in this group
These codes describe the same broad procedure and differ in one respect each. Each has its own page with its own fee range and coverage notes.
| Code | Procedure |
|---|---|
| D2663 | Composite onlay — three surfaces — this page |
| D2542 | Metallic onlay — two surfaces |
| D2543 | Metallic onlay — three surfaces |
| D2544 | Metallic onlay — four or more surfaces |
| D2642 | Porcelain onlay — two surfaces |
| D2643 | Porcelain onlay — three surfaces |
| D2644 | Porcelain onlay — four or more surfaces |
| D2662 | Composite onlay — two surfaces |
| D2664 | Composite onlay — four or more surfaces |
Questions about D2663
What procedure is D2663?
D2663 is shorthand for composite onlay, three surfaces — the same five characters every practice and every insurer in the country uses for it.
What is the typical fee for D2663?
Expect $1,150–$2,430. Ask for the number in writing, because the code carries no fee of its own and every practice sets its own.
How do dental plans handle D2663?
It is generally a covered benefit in the major category, typically 50%. Frequency limits and waiting periods are the usual reasons a claim is refused.
What is the difference between D2663 and D2662?
D2662 is composite onlay, two surfaces: it covers two surfaces instead of three surfaces. Apart from that, the two describe the same treatment — which is why the notes for the visit matter more here than the code itself.
Also known as: onlay, partial crown, cusp coverage, indirect restoration, cracked tooth restoration.