Anesthesia Billing Services That Capture Every Unit

Payment equals the sum of base units and time units, multiplied by the carrier's converting factor. Base units reflect the complexity of the procedure being performed under the anesthesia code series, drawn from the ASA Relative Value Guide for commercial claims and from Medicare's own unit tables for Medicare claims. Time units represent anesthesia time in 15-minute increments. We compute both from the payer's own tables and reconcile the result against the contract rate before the claim is prepared.

Times should be recorded contemporaneously for each case, reflecting the actual start and end of anesthesia service, and consistent with the rest of the record. Payers compare claimed time against the anesthesia record and the facility's own timestamps, so estimated or templated times are the leading audit finding. Our charge capture locks times the day of service, when they can still be verified against the record rather than reconstructed.

QZ reports a CRNA furnishing anesthesia without medical direction by an anesthesiologist, while QK reports a CRNA whose case is medically directed within the concurrent-case rules. The difference is a payment methodology difference, not paperwork, and it depends on the actual clinical arrangement during the case, not on billing convenience. We determine the relationship per case from the day's schedule and document it consistently, because direction-modifier mismatches are among the highest-audit findings in anesthesia billing.

Neuraxial labor analgesia is generally bundled into the obstetric delivery codes rather than billed as a separate anesthesia service, for example 59410 for vaginal delivery with epidural anesthesia and 59510 for cesarean delivery with spinal or epidural anesthesia. The anesthesia professional's participation is reflected in the delivery claim rather than in a separate anesthesia line. We coordinate with the obstetric billing side so neither claim double-reports or omits the anesthesia component.

Medicare pays anesthesia time in 15-minute units, and a partial increment counts as one unit when it reaches 8 minutes or more, while fewer than 8 minutes counts as no unit. Commercial carriers set their own increments, and several bill in smaller increments, so the same case can produce different time units across carriers. We apply each payer's stated increment policy rather than a single habit across the board.

In a medical-direction arrangement, the anesthesiologist and CRNA each report the case with the modifiers that describe the arrangement, commonly QK or QX on the CRNA side paired with the anesthesiologist's direction modifier, and payment is split per the payer's stated percentage. The arrangement must be real, documented, and within the concurrent-case limits. We reconcile the modifier pairs across the day's cases so the two claims tell one consistent story.

AA reports an anesthesiologist furnishing the anesthesia service alone, while AD reports an anesthesiologist medically directing two to four concurrent procedures. The distinction is whether the physician was directing concurrent cases or personally furnishing the anesthetic, and it must match the day's schedule and the documented presence. Reporting AD on solo cases or AA on directed cases misprices the claim and creates exactly the inconsistency concurrent-case edits look for.

Under Medicare's medical direction rules, the anesthesiologist's payment for a directed case is reduced, commonly described as a percentage of the allowance, while the CRNA's claim carries its own medical-direction modifier. Commercial contracts vary in how they treat directed and supervised arrangements. The operational requirement is the same everywhere: the direction relationship, presence, and concurrent-case count must be documented per case, because payment and audit defense both rest on that record.

Pricing starts at 2.49% of monthly collections, with no setup fees and month-to-month agreements. There are no long-term contracts, so the relationship continues only as long as the numbers justify it. See the full service scope on our medical billing service page.