How does Rural Pass-Through funding affect rural anesthesia options?

Reviewed by Jeremie J. Perry, MD, FASA on October 8, 2026

Medicare Rural Pass-Through reimbursement allows certain qualifying rural hospitals to receive special payment for eligible nonphysician anesthesia services. Those payment rules can influence staffing economics but do not, by themselves, address every barrier to rural anesthesia access.

The Medicare Rural Pass-Through allows qualifying rural hospitals and Critical Access Hospitals to receive reasonable cost-based payment for certain CRNA or Anesthesiologist Assistant professional services. It does not provide an analogous reasonable cost-based pathway for physician Anesthesiologist professional services. That asymmetry can narrow the staffing models a low-volume rural hospital can afford to sustain.

Low-volume rural hospitals pay for readiness, not only encounters

An obstetric or surgical service must maintain call coverage, equipment, drugs, blood access, emergency protocols, and rescue capability even when procedure volume is low. The fixed cost of readiness can therefore dominate the economics of rural anesthesia.

CAA eligibility is limited in practice without physician support

Federal Medicare rules permit certain CAA services within the Rural Pass-Through payment program, but federal hospital and Critical Access Hospital regulations require an Anesthesiologist to supervise a CAA administering anesthesia. A rural hospital therefore cannot use CAAs as a substitute for financing physician Anesthesiologist involvement. This limits how useful CAA eligibility is when the pass-through does not offer comparable cost-based payment for physician anesthesia services.

Why TSA supports reform

Expanding comparable federal Medicare Rural Pass-Through support to physician Anesthesiologists would give small rural hospitals more staffing options. Hospitals could build local teams using physicians, CRNAs, and CAAs based on patient needs, service volume, and available resources rather than having payment policy favor only certain staffing arrangements.

For the full evidence review, see Physician-Led Obstetric Anesthesia Care and Maternal Safety in Rural America.

Sources

  1. CMS Medicare Claims Processing Manual, Chapter 3 §100.2 — Payment for CRNA or AA Services
  2. CMS — Anesthesiologist Assistants
  3. 42 CFR §485.639(c)(2) — CAA supervision in Critical Access Hospitals
  4. CMS (2026) — Anesthesia Rural Pass-Through payment instructions

Reviewed By

Board certification:
Anesthesiology — American Board of Anesthesiology (ABA)
Last reviewed: