Anesthesiology CPT Codes for Ambulatory Surgery Centers
Anesthesiology is the peri-operative backbone of an ASC, covering pre-operative evaluation, intra-operative management, and recovery for nearly every case on the schedule. The billed code follows the surgical procedure being supported rather than describing a standalone surgery.
Anesthesia uses its own CPT family, 00100 through 01999, where each code maps to a body region or type of operation. For example, 01402 covers anesthesia for knee arthroplasty and 00176 covers anesthesia for pharyngeal surgery. Payment is built on base units, time, and modifiers, so its documentation differs from surgical CPT logic. When the underlying surgery is ASC-eligible, it can be performed in the ASC and the supporting anesthesia is part of that episode. DataLily AI's procedure library tracks CPT-specific prior-authorization and documentation requirements so the anesthesia and surgical sides stay aligned.
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Anesthesiology codes(58)
- 01402Anesthesia knee arthroplasty
- 00176Anesthesia pharyngeal surgery
- 00670Anesthesia spine cord surgery
- 00192Anesthesia facial bone surgery
- 00211Anesthesia cran surgery hemotoma
- 00214Anesthesia skull drainage
- 00215Anesthesia skull repair/fract
- 00474Anesthesia surgery of rib
- 00524Anesthesia chest drainage
- 00540Anesthesia chest surgery
- 00542Anesthesia removal pleura
- 00546Anesthesia lung chest wall surgery
- 00560Anesthesia heart surgery without pump
- 00561Anesthesia heart surgery <1 yr
- 00562Anesthesia heart surgery with pmp age 1+
- 00567Anesthesia CABG with pump
- 00580Anesthesia heart/lung transplnt
- 00604Anesthesia sitting procedure
- 00632Anesthesia removal of nerves
- 00792Anes iper upr abdominal partial hptc
- 00794Anes iper upr abdominal pncrtect
- 00796Anes iper upr abdominal liver transplant
- 00802Anesthesia fat layer removal
- 00844Anesthesia pelvis surgery
- 00846Anesthesia hysterectomy
- 00848Anesthesia pelvic organ surgery
- 00864Anesthesia removal of bladder
- 00865Anesthesia removal of prostate
- 00866Anesthesia removal of adrenal
- 00868Anesthesia kidney transplant
- 00882Anesthesia major vein ligation
- 00904Anesthesia perineal surgery
- 00908Anesthesia removal of prostate
- 00932Anesthesia amputation of penis
- 00934Anesthesia penis nodes removal
- 00936Anesthesia penis nodes removal
- 00944Anesthesia vaginal hysterectomy
- 01140Anesthesia amputation at pelvis
- 01150Anesthesia pelvic tumor surgery
- 01212Anesthesia hip disarticulation
- 01214Anesthesia hip arthroplasty
- 01232Anesthesia amputation of femur
- 01234Anesthesia radical femur surgery
- 01272Anesthesia femoral artery surgery
- 01274Anesthesia femoral embolectomy
- 01404Anesthesia amputation at knee
- 01442Anesthesia knee artery surgery
- 01444Anesthesia knee artery repair
- 01486Anesthesia ankle replacement
- 01502Anesthesia lower leg embolectomy
- 01634Anesthesia shoulder joint amput
- 01636Anesthesia forequarter amput
- 01638Anesthesia shoulder replacement
- 01652Anesthesia shoulder vessel surgery
- 01654Anesthesia shoulder vessel surgery
- 01656Anesthesia arm-leg vessel surgery
- 01756Anesthesia radical humerus surgery
- 01990Support for organ donor
Is anesthesia used for procedures done in an ambulatory surgery center?
Yes. Most ASC cases involve an anesthesia care team that manages pre-operative evaluation, intra-operative anesthesia, and recovery. The service is reported on place of service 24, and the specific anesthesia code follows the surgical procedure it supports, such as 01402 for a knee arthroplasty case.
What CPT codes does anesthesiology use?
Anesthesia services use the CPT range 00100-01999, where each code corresponds to a body region or type of operation. Add-on codes in the 99100-99140 range capture qualifying circumstances and physical status. Our dataset maps 58 ASC-relevant anesthesia codes for this specialty.
Can anesthesia be provided for procedures in the ASC setting?
Payment depends on the underlying surgery. When the surgical procedure is ASC-eligible, it can be performed in an ASC, and the supporting anesthesia is part of that episode. Some codes are not typically performed in an ASC and are usually directed to a hospital outpatient department or office instead. Anesthesia itself is paid using base units, time, and applicable modifiers.