CPT Modifier 23

Published 07/16/2020

Unusual anesthesia.

Guidelines and Instructions
  • This modifier may only be submitted with anesthesia CPT codes 00100 through 01999
  • Anesthesiologists, Certified Registered Nurse Anesthetists (CRNAs) or anesthesiologist assistants (AAs) should submit this modifier to indicate that a procedure that is normally performed under local anesthesia or with a regional block required general anesthesia
  • This modifier is informational only and does not affect reimbursement
  • Submit the modifier indicating that the service was personally performed, medically directed or medically supervised first and CPT modifier 23 second

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