Anesthesia and Pain Management


Access CMS-level guidance for anesthesia services through the following links.

  • CMS' Anesthesiologists Center
    • Includes a spreadsheet of base units by CPT code and current year Anesthesia Conversion Factor
  • CMS Medicare Claims Processing Manual (Pub. 100-04), Chapter 12 (PDF, 1.1 MB)
    • Definitions of personally performed, medically directed and medically supervised: section 50
    • Definition of concurrent procedures: section 50.C
    • Anesthesia claims modifiers: section 50.I
    • Anesthesia and Teaching Facilities: section 100.1.2.A.4
    • Qualified Nonphysician Anesthetists Services (CRNAs and AAs): section 140
    • Billing Modifiers for qualified nonphysician anesthetists: section 140.3.3




Anesthesia and Pain Management Articles