Anesthesia CPT codes and Time units

00100 ANESTHESIA PROC SALIVARY GLANDS INCLUDING BIOPSY 5
00102 ANES-PROC INVOLVING PLASTIC REPAIR CLEFT LIP 6
00103 ANESTHESIA RECONSTRUCTIVE PROCEDURES OF EYELID 5
00104 ANESTHESIA FOR ELECTROCONVULSIVE THERAPY 4
00120 ANES-PROC EXTERNAL MIDDLE&INNER EAR INCL BX; NOS 5
00124 ANES-PROC EXT MID&INNR EAR INCL BX; OTOSCOPY 4
00126 ANES-PROC EXT MID&INNR EAR INCL BX; TYMPANOTOMY 4
00140 ANESTHESIA FOR PROCEDURES ON EYE; NOS 5
00142 ANESTHESIA FOR PROCEDURES ON EYE; LENS SURGERY
00144 ANESTHESIA PROCEDURES ON EYE; CORNEAL TRANSPLANT 6
00145 ANESTHESIA PROCEDURES EYE; VITREORETINAL SURGERY 6
00147 ANESTHESIA FOR PROCEDURES ON EYE; IRIDECTOMY
00148 ANESTHESIA FOR PROCEDURES ON EYE; OPHTHALMOSCOPY 4
00160 ANESTHESIA PROC NOSE&ACCESSORY SINUSES; NOS 5
00162 ANES-PROC NOSE&ACCESS SINUSES; RADICAL SURGERY 7
00164 ANES-PROC NOSE&ACCESS SINUSES; BX SOFT TISSUE 4
00170 ANES-INTRAORAL INCLUDING BIOPSY; NOS 5
00172 ANES-INTRAORAL INCLUDING BX; REPAIR CLEFT PALATE 6
00174 ANES-INTRAORL INCL BX; EXC RETROPHARYNG TUMR 6
00176 ANES-INTRAORAL INCLUDING BIOPSY; RADICAL SURGERY 7
00190 ANESTHESIA PROCEDURES FACIAL BONES OR SKULL; NOS 5
00192 ANES-PROC FACIAL BONES/SKULL; RADICAL SURGERY 7
00210 ANES-INTRACRAN; NOT OTHERWISE SPECIFIED 11
00212 ANES-INTRACRAN; SUBDURAL TAPS 5
00214 ANES-INTRACRAN; BURR HOLES INCL VENTRICULOGRAPHY 9
00215 ANES-INTRACRAN;PLASTY/ELEV SKULL FX-XTRADURL 9
00216 ANES-INTRACRAN; VASCULAR PROCEDURES 15
00218 ANES-INTRACRAN; PROCEDURES IN SITTING POSITION 13
00220 ANES-INTRACRAN; CEREBROSP FL SHUNTING PROCEDURES 10
00222 ANES-INTRACRAN; ELECTROCOAGULAT INTRACRAN NERVE 6
00300 ANES-INTEG SYST MUSC&NERV HEAD NECK TRUNK;NOS 5
00320 ANES-PROC ESOPH THYRD TRACHEA&LYMPH; NOS 1 YR/> 6
00322 ANES-PROC ESOPH THYROID TRACH LYMPH;BX THYROID 3
00326 ANES-ON THE LARYNX&TRACHEA CHILDREN < 1 YEAR AGE
00350 ANESTHESIA PROCEDURES MAJOR VESSELS OF NECK; NOS 10
00352 ANES-PROC MAJOR VESSELS NECK; SIMPLE LIGATION 5
00400 ANES-PROC INTEG SYS EXTREM ANT TRNK&PERIN; NOS 3
00402 ANES-INTEG SYST EXTREM TRUNK PERIN;BREAST RECON 5
00404 ANES-INTEG EXTREM TRUNK;RADL/MOD RAD BREAST PROC 5
00406 ANES-INTEG EXTREM TRUNK;RADL BRST W/NODE DISSECT 13
00410 ANES-INTEG EXTREM TRUNK PERINEM;CONVERT ARRYTH 4
00450 ANESTHESIA PROCEDURES CLAVICLE AND SCAPULA; NOS 5
00452 ANES-PROC CLAVICLE&SCAPULA; RADICAL SURGERY 6
00454 ANES-PROC CLAVICLE&SCAPULA; BIOPSY CLAVICLE 3
00470 ANESTHESIA FOR PARTIAL RIB RESECTION; NOS 6

Time  Units


In calculating units of time, use 10 minutes per unit. If a medical provider bills for a portion of 10 minutes, round the time up to the next 10 minutes and reimburse one unit for the portion of time. (See Subsection A, Payment Ground Rules for Anesthesia Services, for additional information on reporting of time units.)

Multiple Procedures

Anesthesia reimbursement for multiple procedures is based on the procedure with the highest base value, plus modifying units (if appropriate), plus total time units for all combined surgical procedures.

No additional base value shall be reimbursed for anesthesia rendered during additional surgical procedures (other than the primary procedure) performed on the same day during the same operative setting.


Reimbursement Guidelines

Anesthesia services must be submitted with an appropriate anesthesia payment modifier toindicate the number of providers and roles involved in the anesthesia service. Effective for claims processed on or after July 1, 2018, regardless of date of service, claims for anesthesia services submitted without an appropriate payment modifier will be denied as a billing error for lack of a required modifier. A corrected claim will need to be submitted with the appropriate modifier(s) added.

One anesthesia provider at a time shall be reimbursed per patient. The only exception is supervised anesthesia services by a CRNA under the medical direction of a physician.

If two anesthesia services claims are received for the same patient, same date of service, and the payment modifiers do not agree about the medical direction or supervision performed, the first claim processed will be allowed. The second claim processed is subject to denial as a billing error due to lack of consistent information about who performed the service. No adjustment for reimbursement to the second anesthesia provider can be made until a corrected claim is received from the first (allowed) anesthesia provider so that the payment modifiers on both claims agree about who performed which responsibilities in the anesthesia service. The billing office for the denied claim is responsible to contact the billing office for the other anesthesia provider involved (supervised CRNA or physician providing medical direction) and arrange for the submission of the needed corrected claim.