D9222 Dental Code: Deep Sedation/General Anesthesia (First 15 Min)

What D9222 covers

D9222 reports the first 15-minute increment of deep sedation or general anesthesia. Both take the patient to a state where purposeful response to stimulation is reduced or absent, a deeper plane than moderate sedation. The code is billed by elapsed time, not by procedure, and the first 15-minute block, or any portion of it, is one unit.

Every 15-minute block after that, or any portion of one, is a unit of D9223. D9222 opens the case and D9223 extends it.

The distinguishing axis: depth, then airway, then increment

Depth of sedation. Deep sedation and general anesthesia (D9222/D9223) reduce or remove purposeful response. Moderate sedation (D9239/D9243) keeps the patient responsive to verbal commands and maintaining their own airway. The anesthesia record describes the plane reached, and the code has to agree with it.

Airway, new for 2026. Deep sedation or general anesthesia without an advanced airway device is D9222 and D9223. General anesthesia that requires an advanced airway is D9224 and D9225. An advanced airway means a supraglottic or subglottic device, such as a laryngeal mask airway, a laryngeal tube, or an endotracheal tube. Both conditions must hold for the new pair: the patient reaches general anesthesia and the airway is in use. Increments before the airway went in, and deep sedation managed with something short of an advanced airway, stay on D9222 and D9223.

First increment versus add-on. D9222 is the first 15 minutes; D9223 is each subsequent 15 minutes. Every time-based sedation pair uses the same split.

What changed for 2026

D9222 and D9223 were revised. The descriptors now state the increment is 15 minutes or any portion of one, and that the code applies with or without nitrous oxide given alongside. The procedure is unchanged.

D9224 and D9225 were added for general anesthesia that requires an advanced airway, with the same first-15-minutes and each-subsequent-15-minutes structure. Before 2026 there was no separate code for this case. Add both to the PMS code list and label them as the advanced-airway pair, so the biller picks by what the chart says about the airway rather than by habit.

How the time units stack

The clock generally starts when the provider initiates the anesthesia and monitoring protocol and stays in continuous attendance, not merely when the first drug goes in. It stops when the patient is stable enough to be monitored by trained staff without that continuous attendance.

Worked example for a 40-minute case:

• First 15 minutes: D9222, one unit.
• Minutes 16 through 30: D9223, one unit.
• Minutes 31 through 40: D9223, one unit (any portion of a 15-minute block counts as a full unit).

A 40-minute case is D9222 plus two units of D9223. Claims fall apart when the times are missing and the carrier has nothing to adjudicate the units against. Always report D9222 before D9223: an add-on with no first unit is an orphan and gets rejected.

When to bill D9222

Bill D9222 when the provider administers deep sedation or general anesthesia without an advanced airway, and the anesthesia record shows the start time and the depth reached.

Do not bill D9222 for:

• Each additional 15-minute increment. Those are units of D9223.
• General anesthesia with an advanced airway. Use D9224 and D9225.
• IV moderate (conscious) sedation. Use D9239 for the first increment and D9243 for each additional one.
• Nitrous oxide as the only agent. Use D9230.

Coverage reality and medical cross-coding

Coverage is plan-dependent. Many dental plans pay deep sedation or general anesthesia only when it is medically necessary, commonly tied to a surgical procedure, the patient’s age, or a documented condition. A case requested for anxiety alone on a routine procedure is frequently denied as not necessary. Some plans require prior authorization, and some cap the total anesthesia time or units they pay, which reaches the D9223 units more than the first unit.

Many cases also have a path to medical insurance, particularly in hospital or surgical-center settings, for patients with a qualifying medical condition, or where a payer’s medical-necessity criteria are met. Medical billing uses its own code set and prior-authorization rules, so a medical case is not simply the CDT code sent to a medical payer.

Before the appointment, verify the anesthesia benefit, confirm whether prior authorization is required, and decide whether the case belongs on dental or medical. Put the patient’s out-of-pocket number in writing based on what the specific plan says.

Documentation that supports the claim

Deep sedation and general anesthesia claims get reviewed, so the anesthesia record carries the weight. It generally needs:

• Start time, when the provider initiated the anesthesia and monitoring protocol and began continuous attendance, and stop time, when that attendance ended. Record both at the time of treatment; reconstructed times are the first thing an anesthesia audit challenges.
• The depth of sedation reached, so the deep/general code is defensible against the moderate codes.
• The airway technique, including whether an advanced airway was placed.
• The drugs given, doses, and route.
• Vital signs monitored throughout the case.
• The procedure performed and the medical-necessity reason for the anesthesia.

The medical-necessity narrative does the most work on the claim. A line tying the anesthesia to the procedure or a documented patient condition prevents the common “not necessary” denial: “Deep sedation indicated for surgical extraction of impacted third molars in a patient unable to tolerate treatment otherwise, total anesthesia time 40 minutes.”