Anesthesia Time Caps 2026: What ASCs Must Do Now

The Denial You Didn't See Coming

Let me paint a scenario I've been hearing from colleagues across the country. A private-practice plastic surgeon performs an abdominoplasty with liposuction — a complex case that legitimately runs three and a half hours under general anesthesia. The CRNA documents every minute. The operative note is clean. The anesthesia record is flawless. Then the Anthem claim comes back denied.

Not denied for missing documentation. Not denied for a modifier error. Denied because the payer decided — using CMS physician work time values — that the procedure should have taken less time than it actually did. That's not a billing error. That's a policy designed to cap what you can collect regardless of what you actually delivered.

This is not hypothetical. Anthem Blue Cross Blue Shield's time-cap policy took effect February 1, 2025, applying to all claims billed under CPT codes 00100–01999 in Connecticut, New York, and Missouri. The formula: allowable anesthesia time is calculated based on CMS physician work time values — not actual documented anesthesia time. When documented time exceeds those preset thresholds, claims are being denied outright. That's real money walking out the door of your ASC right now.

After fifteen years as a CRNA and running an anesthesia group in Miami, I've watched reimbursement erode in ways that would have seemed impossible when I started. But what's happening in 2026 feels different. This isn't slow compression. It's a structural attack on how anesthesia time is valued — and it's arriving simultaneously from multiple directions at once.

The Financial Floor Is Already Cracking

Before we get into the legislative battle, let's look at the numbers, because they're worse than most administrators realize.

The average anesthesia reimbursement rate in 2023 was $21.88 per unit — a 5.5% decline from 2019. Medicare specifically dropped from $22.27 per unit in 2019 to $21.12 in 2023. The 2026 Medicare Physician Fee Schedule set the anesthesia conversion factor at $20.57 — technically a 1.3% increase from 2025 — but a built-in -2.5% efficiency adjustment threatens to wipe out any gain before the ink is dry. Becker's ASC has identified anesthesia capacity as the defining growth constraint for surgical centers heading into this year, and you can see why when you map the economics.

And then there's what UnitedHealthcare did to independently practicing CRNAs. Effective October 1, 2025, UHC reduced reimbursement for independently practicing CRNAs by 15% under the QZ modifier. Fifteen percent. The AANA called it "unacceptable, especially amid a national shortage of anesthesia providers" — and they're right. Nearly 30% of practicing anesthesiologists are projected to leave clinical practice by 2033. You can't cut pay for the providers you're most dependent on and then act surprised when the shortage deepens.

For private-practice plastic surgeons running a cash-pay cosmetic surgery center, you might be tempted to think this doesn't touch you. Think again. Even in a $15,000 cash-pay abdominoplasty, the anesthesia component represents a meaningful revenue line — and if your contracted CRNA or anesthesia group suddenly can't make the economics work, you lose coverage. In Miami, I've already had conversations with surgical facilities reconsidering their anesthesia arrangements because their groups are hemorrhaging money on the commercial-plan side of the business. That pressure flows downstream fast.

The Legislative Map Is Fracturing — And Not in a Good Way

Here's where it gets complicated for any ASC trying to build a compliance strategy: the rules are literally different depending on which state you're in, and they're changing in real time.

The good news: Illinois enacted legislation prohibiting insurers from setting time limits on anesthesia coverage, requiring reimbursement for the full documented duration of procedures. Maryland passed a similar ban. Washington state's House Bill 1812 — reintroduced January 29, 2026 — would go even further, establishing monetary penalties, claim repayment obligations, and potential license suspension for insurers that violate the ban. That's teeth. That's the kind of legislation that actually changes payer behavior.

The bad news: New York, where Anthem's policy is already active, is moving in the opposite direction. Amendments to New York State Assembly Bill A5375-A and Senate Bill S7918-A contain a 'hidden clause' that would actually enable insurers to impose predetermined anesthesia time limits — a maneuver the ASA has formally opposed. In a state where Anthem's time cap is already generating denials, enshrining that authority in statute would be catastrophic.

If your practice operates in multiple states, or if you bill commercial plans that cross state lines, you need a compliance map today — not after your next denial. The patchwork is only going to get more complex through 2026.

There's also a quieter threat worth flagging: Elevance Health (Anthem's parent company) implemented a 10% facility fee penalty for procedures performed with out-of-network clinicians, effective January 1, 2026. That creates direct pressure on ASCs to limit which CRNAs or anesthesiologists can operate in their facility — effectively allowing payers to shape your clinical staffing decisions through financial coercion.

What the ASA 2026 Guideline Actually Tells Us About Documentation and Time

Here's the angle that most of the billing and policy coverage is missing entirely: the brand-new ASA 2026 Practice Guideline on Perioperative Pain Management is directly relevant to how you document and justify anesthesia time — especially for the kinds of complex cases where time caps create the most damage.

Published in January 2026 in Anesthesiology (Joshi GP et al., Anesthesiology 2026;144:19–43), the guideline carries a strong recommendation for fascial plane blocks in adults undergoing open abdominal, retroperitoneal, pelvic, and mastectomy surgeries to reduce opioid requirements in the first 24 postoperative hours. The data behind that recommendation is compelling: opioid use reduced by approximately 19 mg oral morphine equivalents in the first 24 hours. That's not a marginal benefit — that's a clinically and economically meaningful outcome.

For private-practice plastic surgeons, this matters in very specific ways. Consider a patient presenting for bilateral mastectomy with immediate reconstruction — a case that can run four to five hours with complex positioning, tissue expanders, and intraoperative nerve monitoring. Under a time-cap framework, that case is exactly the kind that generates a denial. But if your anesthesia team performs a serratus anterior plane block or a pectoral nerve (PECS II) block with, say, 30 mL of 0.25% bupivacaine with epinephrine on each side — and that's documented as a distinct, guideline-supported intervention — you've now created a billing record that explains and justifies additional time. The regional technique is the procedure, not just an add-on.

NYSORA's summary of the 2026 guideline also highlights conditional recommendations for fascial plane blocks in minimally invasive abdominal and cardiothoracic procedures — which extends the clinical and documentation argument into laparoscopic cases as well. For an ASC running a high volume of laparoscopic procedures, building a regional-first protocol isn't just good patient care. In a time-cap environment, it's also your best documentation defense.

The practical implementation of multimodal analgesia — combining fascial plane blocks with scheduled acetaminophen (1g IV q6h), ketorolac 15–30 mg IV, and low-dose dexamethasone (4–8 mg IV) as a standard anesthetic plan — should be written into your ASC's standing orders and anesthesia protocols now. When every component of care is protocolized, documented, and traceable to a published guideline, the argument for the time your team spent is far stronger than a bare anesthesia time log.

What Your ASC Must Do Before the Next Denial

I'm going to be direct here because I think a lot of practices are in a reactive posture when they need to be building offense. Here's the tactical list:

1. Audit your Anthem and UHC claims from February 2025 forward. Pull every CPT 00100–01999 claim and identify any denial or partial payment where documented anesthesia time exceeded the CMS work-time threshold for that procedure code. Quantify the dollar exposure. For a busy ASC doing 150 cases per month, even a 10% denial rate on complex cases can represent tens of thousands of dollars monthly.
2. Build a regional anesthesia documentation protocol aligned with the ASA 2026 guideline. Every fascial plane block should be documented with technique, agent, dose, volume, and the clinical rationale referencing the guideline. If you're performing TAP blocks, PECS blocks, serratus plane blocks, or erector spinae plane blocks, that documentation needs to be discrete and specific — not buried in a generic anesthesia note.
3. Get a state-by-state compliance map. If you bill commercial plans in New York, Connecticut, or Missouri, your exposure under Anthem's current policy is real and immediate. If you're in Illinois or Maryland, you have statutory protection — but you need documentation to enforce it. If you're in Washington state, HB 1812 may give you penalties and repayment rights if an insurer violates the ban.
4. Preoperative optimization is your first line of defense against runaway case time. This is where I'll mention what we've built at MyPreOp.ai — an AI-powered preoperative evaluation platform designed to meet criteria for Clinical Decision Support under the 21st Century Cures Act. One of the underappreciated ways practices lose anesthesia time (and thus trigger time-cap denials) is through intraoperative complications or delays that trace back to inadequately evaluated patients. When your pre-op workup is thorough, structured, and documented before the patient hits the OR, you reduce unexpected intraoperative events — and you reduce the legitimate grounds a payer has for questioning your time.
5. Track the QZ modifier situation actively. If your CRNAs are billing under QZ (independent practice, no physician supervision), the 15% UHC cut is already in effect. Model the revenue impact. In some markets, this may require renegotiating your CRNA contracts or restructuring supervision arrangements — neither of which is a quick fix, which is exactly why you need to start now.

For private-practice cosmetic surgery, the math is stark. A cash-pay rhinoplasty with septoplasty might bill $18,000 to $22,000 all-in. Even if anesthesia is a cash-pay line item, the surgeon's ability to attract a qualified CRNA depends on that CRNA being able to sustain a viable practice — which means the commercial-plan economics matter even if your surgical fees don't touch insurance. The workforce shortage is the connective tissue here: nearly 30% of practicing anesthesiologists are projected to leave clinical practice by 2033. You cannot afford to let the economics of anesthesia deteriorate to the point where coverage becomes a staffing crisis.

The Bigger Picture: Why Preoperative Infrastructure Is Now a Revenue Strategy

Fifteen years in clinical anesthesia has taught me that the problems you solve before the patient is on the table are always cheaper than the ones you solve in the room. That principle has never been more financially relevant than it is in 2026.

Payer time caps create an incentive structure where every minute of unexpected case complexity costs you money. Inadequate preoperative evaluation is one of the most common drivers of that complexity — an uncontrolled HbA1c above 8.0% that you didn't catch, a patient on apixaban who wasn't properly bridged, an undiagnosed OSA that changes your airway management mid-case and adds 45 minutes you'll never recover on the claim. These aren't hypothetical. These happen in real ASCs every week.

The MyPreOp.ai validation study is built around exactly this premise: structured, AI-assisted preoperative clearance reduces the clinical variability that drives both patient risk and billing risk. When your pre-op process is systematic and defensible, you're not just protecting patients — you're building the documentation infrastructure that supports your time, your interventions, and your claims.

The legislative fight over anesthesia time caps is going to take years to resolve. Some states will ban the practice. Others will quietly enable it. CMS conversion factors will keep drifting in ways that don't keep pace with actual practice costs. None of that is in your direct control. What is in your control is the quality of your documentation, the sophistication of your regional anesthesia protocols, the thoroughness of your preoperative evaluation, and the speed with which you identify and respond to denials.

The practices that survive the anesthesia reimbursement environment of 2026 will be the ones that treat documentation as a clinical discipline — not an afterthought. If you're performing fascial plane blocks, multimodal analgesia protocols, and guideline-aligned perioperative pain management, that work deserves to be visible in your record. Make it visible. Your revenue depends on it.