Certified Registered Nurse Anesthetist (CRNA)

CRNA licensed professional nurse who is licensed by the state in which the nurse practices and provides anesthesia/related services consistent with

  • State scope of practice, training and clinical privileges
  • Settings include Ambulatory Surgical Center (ASC), office or outpatient hospital
    • May submit claims to Medicare directly for their services or have payment made to an employer or an entity under which they have a contract
  • Specialty code 43
    • May draw blood gases, insert arterial lines, place peripherally inserted central venous catheters (PICCs) and central venous pressure (CVPs) monitors
  • Consistent with formal guidelines and instructions
  • With skills assessment provided during training

Locum Tenens arrangements do not apply to CRNAs and AAs.

"Incident To"

  • "Nerve Blocks" may be reimbursed as part of physicians or Non Physician Practitioners (NPP) patient management with chronic pain
    • NPP include
      • Nurse Practitioner (NP), Clinical Nurse Specialist (CNS), and Physician Assistant (PA)
  • If CRNA is
    • Advanced Registered Nurse Practitioner (ARNP)
    • CNS
    • "Incident to" a physician or NPP


CPT/HCPCS Append Modifier
00100-01999 QZ
31500, 36410, 36600, 36620, 36555-36569, 62273 QX or QZ
62270, 62310, 62311, 62318, 62319, 64400-64530 59 (no Q modifiers)
01996 Without Q modifiers
76937 No 59/Q modifiers
77003 (UNLESS billed with 64479-64484, 64490-64495) No Q modifiers
0213T-0218T No modifiers


Last Updated Dec 09 , 2023