D9944 is the CDT code for a custom occlusal guard made as a hard appliance covering a full arch. It reports the rigid, full-arch night guard fabricated to protect the teeth and restorations from the forces of nighttime bruxism (grinding) and clenching.
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 D9944 Code
Report D9944 when a patient receives a custom hard occlusal guard that covers a full arch — the standard rigid night guard prescribed for bruxism, clenching, or to protect restorative work from parafunctional forces. The defining features are the hard material and full-arch coverage.
Choose the right occlusal-guard code by material and coverage. A soft appliance, full arch, is D9945; a hard appliance, partial arch is D9946. D9944 is specifically the hard, full-arch guard. Don't confuse occlusal guards with an occlusal orthotic device (such as D7880-series or TMJ-specific appliances), which serve different therapeutic purposes. Matching the code to the appliance's material and arch coverage is essential.
Documentation & Clinical Scenarios
Because guards are sometimes seen as elective, documentation should support medical necessity and identify the appliance precisely:
- The diagnosis — bruxism, clenching, or protection of restorations/dentition from parafunctional wear.
- Signs supporting it — observed wear facets, fractured restorations, hypertrophied muscles, or patient-reported grinding.
- The appliance specifics — hard material, full-arch coverage — to confirm D9944 over D9945/D9946.
- A narrative, since occlusal-guard claims are frequently reviewed for medical necessity.
D9944 reports the guard itself. The evaluation, impressions or scans, and any adjustment visits are documented and, where applicable, coded separately according to plan rules.
Insurance & Billing Tips
- Verify benefits. Occlusal-guard coverage varies; many plans cover D9944 only with documented bruxism, some apply frequency limits, and others exclude guards entirely.
- Match material and arch. Soft full-arch is D9945 and hard partial-arch is D9946 — billing the wrong one for the appliance delivered causes denials.
- Document necessity. Wear facets, fractured restorations, or a bruxism diagnosis support the claim.
- Check frequency limits. Plans that cover guards often limit replacement to a set interval (e.g., once every few years).
- Read the EOB. If denied as elective, a narrative with the bruxism diagnosis and clinical signs supports an appeal.
Example Case
A patient reports waking with jaw soreness and a partner who hears nighttime grinding. The dentist observes flattened wear facets across the dentition and a cracked molar restoration, and diagnoses bruxism. To protect the teeth and restorations, the dentist fabricates a custom hard, full-arch occlusal guard from impressions. The appliance is reported as D9944, documented with the bruxism diagnosis, the observed wear and fractured restoration, and confirmation that it is a hard, full-arch guard. Because the office verified the plan's occlusal-guard benefit, frequency limit, and necessity documentation, the claim processes as expected.
Patients call about the procedure, not the code. DentalReception AI answers and books those calls 24/7, captures insurance details, and routes clinical/billing questions to your team. See night guard calls, or book a demo.
Frequently Asked Questions
What's the difference between D9944, D9945, and D9946?
The codes differ by material and arch coverage. D9944 is a hard appliance, full arch. D9945 is a soft appliance, full arch. D9946 is a hard appliance, partial arch. All are occlusal guards, but the code must match the actual appliance delivered — the rigidity of the material and how much of the arch it covers. Billing D9944 for a soft or partial-arch guard is a common error that leads to denials or down-coding.
Is a night guard the same as an occlusal guard, and what's included in D9944?
"Night guard" is the common term for the occlusal guard reported by D9944 — a custom hard, full-arch appliance for grinding and clenching. D9944 includes the fabrication of the guard itself. The evaluation, the impressions or digital scans, and any later adjustment visits may be reported separately depending on plan rules. Note that an occlusal guard is different from a TMJ-specific occlusal orthotic device, which serves a different therapeutic purpose and has its own coding.
How often will insurance cover D9944?
Coverage varies. Many plans cover an occlusal guard only with a documented bruxism diagnosis, and those that do often apply a frequency limit — commonly allowing replacement once every few years. Some plans exclude guards as elective. When covered, payers typically expect documentation of the grinding diagnosis and clinical signs. Always verify the patient's specific occlusal-guard benefit, frequency limit, and documentation requirements before assuming D9944 will be reimbursed.
Does D9944 require a pre-authorization or narrative?
Frequently, yes. Because occlusal guards are sometimes viewed as elective, many payers require a narrative documenting the bruxism diagnosis and supporting signs — wear facets, fractured restorations, or jaw symptoms — and some require a pre-authorization before fabrication. Confirming the appliance is hard and full-arch, establishing medical necessity, and obtaining any required pre-approval reduces the chance of a denial or an unexpected patient balance on the guard.
Confirm the current CDT descriptor and your specific payer policies before billing — browse the full dental code library or see our insurance verification feature.