Questions to Ask Before Hiring an Anesthesia Billing Company

Before hiring an Anesthesia Billing Company, ask about their base/time unit accuracy rates, their process for capturing medical direction versus medical supervision correctly under Medicare's 50% payment rule, how they handle multi-provider concurrency (CRNA/AA/anesthesiologist), and whether their Anesthesia Billing Services include real-time conversion factor updates. A vendor who cannot answer these with facility-specific data is not equipped to protect a multi-OR group's margins in 2026.

The CY 2026 Medicare Physician Fee Schedule final rule set the anesthesia conversion factor at $20.4976 for non-qualifying APM participants and $20.5998 for qualifying APM participants, a modest 0.88% and 1.39% increase respectively over 2025.

For multi-site anesthesia groups, that narrow margin between conversion factors makes billing accuracy the difference between a break-even quarter and a profitable one. Most practice administrators don't discover their vendor's blind spots until an audit or a payer variance report surfaces the gap, often 12-18 months too late.

Key Considerations When Selecting an Anesthesia Billing Partner

1. Base and Time Unit Miscalculation

Anesthesia billing is one of the few specialties billed on a unit-based formula (base units + time units + modifying units), not a flat CPT rate. A billing company unfamiliar with case-specific base unit assignment or rounding time units incorrectly can silently erode 5-8% of collectible revenue per case across a high-volume OR schedule, invisible until someone runs a payer variance audit.

2. Medical Direction vs. Medical Supervision Errors

Medicare pays differently depending on whether an anesthesiologist medically directs (up to 4 concurrent cases, each qualifying for the full fee split) or medically supervises (more than 4 concurrent cases, paid at a reduced rate) CRNAs or AAs. Misapplying QY, QK, QX, and QZ modifiers is one of the most common triggers for post-payment audits and takebacks in anesthesia groups, and it directly affects reimbursement per case.

3. Conversion Factor and Regulatory Lag

With CMS now running separate conversion factors for Qualifying APM Participants and non-APM clinicians starting in 2026, a billing company still coding against last year's fee schedule, or unaware of which conversion factor applies to a given provider's APM status, will systematically underbill or overbill every claim run through that logic.

Questions to Ask Before You Sign

• How do you validate base unit assignments against the current ASA Relative Value Guide, and how often is that reference updated?
• What is your documented process for applying medical direction modifiers (QK/QX) versus medical supervision (AD), and what's your denial rate tied to modifier errors over the last 12 months?
• Do you separately track which of our providers are Qualifying APM Participants, and can you show how that flows into conversion factor selection on claims?
• What is your average Days in AR for anesthesia claims specifically, not blended across specialties?
• Can you provide a facility-specific case study with before/after Net Collection Ratio, not a generic testimonial?
• How do you handle concurrent CRNA/AA case documentation when a medical direction requirement (like the required post-anesthesia evaluation) is missing?
• What RCM Services do you provide beyond claim submission: root-cause denial analytics, payer contract variance tracking, executive-level reporting?

Generic Vendor vs. Internal Team vs. Specialized Anesthesia Billing Company

Protecting Margins Starts Before the Contract Is Signed

Most anesthesia groups don't lose revenue because of a single bad decision. They lose it in small increments, case after case, from a vendor that treats anesthesia like any other specialty. The questions above are the ones that separate a transactional billing vendor from a partner capable of running true RCM Services at the complexity anesthesia demands.

If your group is evaluating a new Anesthesia Billing Company or reassessing your current one, request a Facility Yield Audit to see exactly where base unit accuracy, modifier compliance, and conversion factor application currently stand against your case volume, before you sign, or renew, anything.

Phone: 888-357-3226 | Email: info@medicalbillersandcoders.com