Insurance · Updated 2026-09-08 · 6 min read
How long will insurance pay for dental sedation?
Seven payers publish seven different limits on a single appointment's anesthesia — from 30 minutes to two and a half hours, plus one that caps the dollars instead.
Every payer that publishes a limit on a single appointment's anesthesia publishes a different one, and the consequence of exceeding it is not the same either. Blue Shield of California's dental HMO stops at 30 minutes per appointment. Alabama Medicaid stops at 45. Delta Dental stops at one hour — but the excess is not billable to the patient. BCBS FEP Dental allows 8 total units across D9222 and D9223 — two hours of anesthesia, over a period its brochure does not state. Wisconsin Medicaid allows 10 units, two and a half hours. Anthem's 60 minutes is a documentation requirement rather than a cap, and Cigna publishes no hour figure anywhere in its clinical guideline. CareSource Georgia, on the guidance for its Georgia Medicaid plan rather than in a titled public manual, caps the dollars instead of the minutes. We do not measure denials attributed specifically to a time cap, so the table below is the payers' own published limits.
The published caps
| Payer | Scope | Limit on one appointment | What happens past it |
|---|---|---|---|
| Blue Shield of California | Dental HMO benefit guideline | 30 minutes per appointment | Not covered — the guideline says difficulty and actual duration are irrelevant |
| Alabama Medicaid | State program | 3 units — 45 minutes (1 unit D9222 plus 2 units D9223) | Units past the maximum are not payable |
| Delta Dental | Participating dentist handbooks | One hour | Additional minutes are not billable to the patient without clinical documentation |
| Anthem | Carrier-wide dental clinical policy | 60 minutes | Written rationale plus the full anesthesia record required — not a payment cap |
| BCBS FEP Dental | Federal program | 8 total units across D9222 and D9223 — two hours of anesthesia; the brochure states no period | Confirm whether it is per date of service or per plan year |
| Wisconsin Medicaid | State program | 10 units per encounter — two and a half hours at $238 per unit | Beyond the stated benefit |
| CareSource Georgia | State program — plan guidance, not a titled manual | $780 per member per date of service across D9222–D9243 | The long case is partly unpaid; D9243 pends for review past 5 units |
| Cigna | Carrier-wide dental clinical guideline | No figure published | "Plan guidelines may limit the number of time units" — the plan document decides |
What the payers' own documents say
The hardest cap in the set, and the bluntest wording:
"General anesthesia, intravenous sedation, etc. is limited to a total of 30 minutes per treatment session ('frequency limitation') regardless of the degree of difficulty of the dental procedure or the total length of time needed to complete the dental procedures." — Blue Shield of California Dental HMO Plans Benefit Guidelines (2026)
Delta's hour, and the part that matters most to an office:
"General anesthesia and intravenous sedation are limited to one hour. Any additional minutes are not billable to the patient unless clinical documentation supports more than an hour was necessary. For example, special health care needs patients may require additional units of anesthesia and may be a benefit according to group/individual contract." — Delta Dental of New Jersey 2023 Participating Dentist Handbook
The same sentence appears in the Delta Dental of Arkansas 2026 Dentist Handbook and in the 2025 edition before it. Northeast Delta Dental's Clinical Documentation Requirements (rev. 2017) states it on the increment codes: "Charges for more than one hour of general anesthesia (D9223) or IV sedation (D9243) performed on the same date of service are disallowed."
Anthem's hour does something else entirely:
"Office anesthesia in excess of 60 minutes for any dental or surgical procedure requires written rationale/documentation explaining the necessity. Necessary documentation includes all associated radiographic images, progress notes, operative report and a complete anesthesia record indicating start and stop times of incremental drug administration." — Anthem Dental Clinical Policy 09-201, Inhalation and Local Anesthesia (2026)
Same number, different consequence: at Delta the hour is where payment stops, at Anthem it is where the paperwork starts.
The federal program states its cap in units: "Up to 8 total units of anesthesia (combined with D9223…)" (2026 BCBS FEP Dental Official Brochure) — 8 total units across D9222 and D9223, and the brochure states no period; confirm whether it is per date of service or per plan year. Wisconsin publishes the price and the cap in one sentence: "ForwardHealth will increase rates for dental anesthesia to $238.00 per 15-minute unit… ForwardHealth will also increase the number of 15-minute units allowed per encounter to 10" (ForwardHealth Update 2025-28, effective 1 January 2026). Alabama Medicaid states its maxima on the code rows themselves — 1 unit of D9222 and 2 of D9223 per date of service, with a current state board permit required.
And Cigna, which is the carrier most often assumed to have an hour limit, states only:
"Plan guidelines may limit the number of time units of deep sedation/general anesthesia that are allowable for a specific date of service and/or episode of care." — Cigna Dental Coverage Determination Guidelines DPPO 2026, ADJ-01
Cigna does add a proportionality clause: where the number of additional time units "appears to exceed the extent of services rendered or Plan allowance, the additional time units may not be allowed." That is a judgement about the case rather than a fixed ceiling.
Why it depends on the plan
Three of the eight limits above are set by a government program, one by a dental HMO benefit guideline, and one — Cigna's — is explicitly delegated to the individual plan document. Delta's hour is stated in participating dentist handbooks, which means it binds the office through the participating agreement rather than the patient through the benefit. That is why the same number produces a different bill: a Delta over-hour is a write-off, a Blue Shield of California over-30-minutes is not covered, and an Anthem over-hour is payable with the right record attached.
What to do
Ask for the maximum allowable units per date of service, not "is anesthesia covered." Every payer above states its limit in units or minutes for one appointment, and that is the number the estimate depends on.
Book the case against the cap. If the plan allows 30 minutes and the surgery needs 90, the office is deciding now whether that is a write-off or a patient conversation.
Where the limit is a documentation threshold, prepare the record before the appointment: written rationale, radiographs, progress notes, operative report, and an anesthesia record with start and stop times of incremental drug administration.
On a Delta participating agreement, do not balance-bill the excess minutes. The handbook says they are not billable to the patient.
Numbers last refreshed September 2026.