General anesthesia is not included in the surgical package. It is billed and paid separately from the surgeon’s fee, with its own set of billing codes, its own calculation method, and often its own provider. The one exception: when the surgeon personally administers the anesthesia, payment for it is bundled into the surgical fee. In nearly every other scenario, you should expect a separate charge for anesthesia services.
What the Surgical Package Actually Covers
The “surgical package,” sometimes called the global surgical package, is a bundled payment that covers the surgeon’s work before, during, and after the operation. For major procedures, it includes the decision to operate, the surgery itself, and all routine follow-up care during a set postoperative period (typically 90 days for major surgery, 10 days for minor surgery). For minor procedures, the initial evaluation visit is also folded in.
What the package does not cover is a long and important list. Diagnostic tests, unrelated office visits, treatment for the underlying condition beyond normal surgical recovery, and return trips to the operating room for complications are all billed separately. Anesthesia administered by a separate provider falls squarely outside the package as well.
Why Anesthesia Is Billed Separately
Anesthesia has its own dedicated range of billing codes (CPT 00100 through 01999), completely distinct from the codes used for surgical procedures. These codes are structured around a formula that doesn’t lend itself to flat-rate bundling: the total charge equals a set number of “base units” assigned to the type of surgery, plus time units calculated from how long the anesthesia lasts, all multiplied by a dollar conversion factor that varies by insurance plan.
A knee replacement, for example, carries 7 base units. If anesthesia time runs 129 minutes, that adds roughly 8.6 time units, bringing the total to 15.6 units. That unit total is then multiplied by the payer’s conversion factor to produce the final charge. Because the time component is variable and unpredictable, anesthesia can’t easily be rolled into a fixed surgical package price. The conversion factor also differs significantly between Medicare, Medicaid, and commercial insurers, adding another layer of variability.
The Exception: Surgeon-Administered Anesthesia
There is one clear situation where anesthesia is included in the surgical fee. When the same physician who performs the procedure also administers the anesthesia, Medicare and most insurers do not allow a separate anesthesia charge. The anesthesia is considered part of the surgical payment. This applies whether the surgeon uses local anesthesia, a nerve block, or sedation. The same rule holds in outpatient and hospital settings.
Peripheral nerve blocks used as the primary anesthetic for a surgery, or as a supplement to general anesthesia, are also not separately billable when performed by the anesthesia team as part of the overall anesthetic plan. An epidural that provides both intraoperative and postoperative pain control, for instance, is folded into the anesthesia service code rather than charged on its own.
Why You Get a Separate Anesthesia Bill
Most surgeries involving general anesthesia are performed with a dedicated anesthesiologist or nurse anesthetist who is not the surgeon. That provider bills independently for their professional services. This means after a single operation you may receive three separate bills: one from the surgeon, one from the anesthesia provider, and one from the facility (hospital or surgery center). Each reflects a different service and a different billing entity.
This surprises many patients, especially when the anesthesia provider turns out to be out of network even though the surgeon and hospital are in network. The No Surprises Act, in effect since 2022, directly addresses this. It bans out-of-network charges and balance billing for services like anesthesiology when they are furnished by out-of-network providers during a visit to an in-network facility. If you have group or individual health insurance, you are protected from paying more than your normal in-network cost-sharing amount for anesthesia in these situations.
What This Means for Your Out-of-Pocket Costs
Because anesthesia is a separate charge, it counts toward your deductible and out-of-pocket maximum independently of the surgeon’s fee. If you’re planning a surgery and trying to estimate total costs, ask both the surgeon’s office and the facility who will be providing anesthesia, whether that provider is in network, and what the estimated anesthesia time will be. Longer surgeries mean more time units and a higher anesthesia bill.
Some commercial payers have attempted to bundle anesthesia into surgical payments through contract negotiations with anesthesia groups. The American Society of Anesthesiologists has flagged this as something providers should watch for in their contracts. For patients, the practical effect of such arrangements would be that anesthesia costs are absorbed into the facility or surgical fee rather than appearing as a separate line item, but this is the exception rather than the norm. In the vast majority of cases, general anesthesia will show up as its own charge on your explanation of benefits.