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Official Description

Selective catheter placement, vertebral artery, unilateral, with angiography of the ipsilateral vertebral circulation and all associated radiological supervision and interpretation, includes angiography of the cervicocerebral arch, when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 36226 refers to a specific medical procedure known as selective catheter placement in the vertebral artery on a unilateral basis. This procedure involves the insertion of a catheter into the vertebral artery, which is a critical vessel supplying blood to the brain. The process begins with the placement of a catheter through a percutaneous approach, typically via the femoral, axillary, brachial, or radial artery, with the retrograde femoral artery approach being the most commonly utilized method. During the procedure, a small incision is made at the insertion site, and an introducer sheath is placed into the artery. A guidewire is then navigated through the arterial system, allowing for the advancement of the catheter into the aortic arch and subsequently into the targeted vertebral artery. The procedure is performed under continuous fluoroscopic guidance to ensure accurate placement of the catheter. Once the catheter is positioned appropriately, radiopaque contrast media is injected to visualize the blood flow through the vertebral circulation. This angiography may also include imaging of the cervicocerebral arch, providing a comprehensive view of the vascular structures involved. The procedure encompasses all necessary radiological supervision and interpretation, ensuring that the findings are documented and communicated effectively. The completion of the procedure involves the removal of the catheter and achieving hemostasis at the arteriotomy site, which is crucial for patient safety and recovery.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The selective catheter placement in the vertebral artery, as described by CPT® Code 36226, is indicated for various clinical scenarios where detailed visualization of the vertebral circulation is necessary. The following conditions may warrant this procedure:

  • Evaluation of Vertebral Artery Stenosis - This procedure is performed to assess narrowing of the vertebral artery, which can lead to reduced blood flow to the brain.
  • Investigation of Vertebrobasilar Insufficiency - It is indicated in cases where there is suspicion of inadequate blood supply to the posterior circulation of the brain, potentially causing symptoms such as dizziness or vertigo.
  • Assessment of Vascular Malformations - The procedure may be necessary to evaluate arteriovenous malformations or other vascular anomalies within the vertebral circulation.
  • Preoperative Planning - It can be utilized to gather critical information prior to surgical interventions involving the cervical spine or posterior fossa.

2. Procedure

The procedure for selective catheter placement in the vertebral artery involves several detailed steps to ensure accurate and safe catheterization. The following outlines the procedural steps:

  • Step 1: Access Site Preparation - The procedure begins with the preparation of the access site, typically the femoral artery, where a small skin incision is made. This site is cleaned and sterilized to minimize the risk of infection.
  • Step 2: Introducer Sheath Placement - An introducer sheath is inserted into the artery through the incision. This sheath serves as a conduit for the guidewire and catheter, facilitating their advancement into the vascular system.
  • Step 3: Guidewire Navigation - A guidewire is inserted through the introducer sheath and navigated through the femoral and iliac arteries into the aorta. Under continuous fluoroscopic guidance, the guidewire is advanced into the aortic arch, positioning it beyond the left subclavian artery or right innominate artery.
  • Step 4: Catheter Advancement - A catheter is then advanced over the guidewire into the aortic arch and positioned at the left subclavian or right subclavian/innominate artery. The guidewire is carefully manipulated to ensure it reaches the appropriate location.
  • Step 5: Catheter Positioning - The catheter is advanced further over the guidewire into the vertebral artery branch. This step is crucial for obtaining the necessary access to perform angiography of the vertebral circulation.
  • Step 6: Contrast Injection and Imaging - Once the catheter is in place, radiopaque contrast media is injected to visualize the blood flow. Angiography of the ipsilateral vertebral circulation is performed, and if indicated, angiography of the cervicocerebral arch is also conducted. This imaging includes arterial, capillary, and venous phase imaging as necessary.
  • Step 7: Catheter Removal and Hemostasis - After the imaging is completed, the catheter is removed. Hemostasis is achieved by applying pressure to the arteriotomy site or utilizing another closure technique to prevent bleeding.
  • Step 8: Documentation - A written interpretation of the findings from the angiography is provided, which is essential for clinical decision-making and further patient management.

3. Post-Procedure

Following the selective catheter placement procedure, patients are typically monitored for any complications, such as bleeding or vascular injury, at the access site. The expected recovery involves observing the patient for signs of hemostasis and ensuring that there are no adverse reactions to the contrast media used during the procedure. Patients may be advised to limit physical activity for a short period to facilitate healing at the arteriotomy site. Additionally, the written interpretation of the angiographic findings will guide further management and treatment decisions based on the results obtained during the procedure.

Short Descr PLACE CATH VERTEBRAL ART
Medium Descr SLCTV CATH VERTEBRAL ART ANGIO VERTEBRAL ARTERY
Long Descr Selective catheter placement, vertebral artery, unilateral, with angiography of the ipsilateral vertebral circulation and all associated radiological supervision and interpretation, includes angiography of the cervicocerebral arch, when performed
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 1 - 150% payment adjustment for bilateral procedures applies.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 1 - Statutory payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator T-Packaged Codes
ASC Payment Indicator Packaged service/item; no separate payment made.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) I4B - Imaging/procedure - other
MUE 1
CCS Clinical Classification 54 - Other vascular catheterization, not heart

This is a primary code that can be used with these additional add-on codes.

36218 Addon Code MPFS Status: Active Code APC N ASC N1 CPT Assistant Article Illustration for Code Selective catheter placement, arterial system; additional second order, third order, and beyond, thoracic or brachiocephalic branch, within a vascular family (List in addition to code for initial second or third order vessel as appropriate)
36228 Addon Code MPFS Status: Active Code APC N ASC N1 Selective catheter placement, each intracranial branch of the internal carotid or vertebral arteries, unilateral, with angiography of the selected vessel circulation and all associated radiological supervision and interpretation (eg, middle cerebral artery, posterior inferior cerebellar artery) (List separately in addition to code for primary procedure)
37252 Addon Code MPFS Status: Active Code APC N ASC N1 Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; initial noncoronary vessel (List separately in addition to code for primary procedure)
37253 Addon Code MPFS Status: Active Code APC N ASC N1 Intravascular ultrasound (noncoronary vessel) during diagnostic evaluation and/or therapeutic intervention, including radiological supervision and interpretation; each additional noncoronary vessel (List separately in addition to code for primary procedure)
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
50 Bilateral procedure: unless otherwise identified in the listings, bilateral procedures that are performed at the same session, should be identified by adding modifier 50 to the appropriate 5 digit code. note: this modifier should not be appended to designated "add-on" codes (see appendix d).
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
GC This service has been performed in part by a resident under the direction of a teaching physician
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
X5 Diagnostic services requested by another clinician: for reporting services by a clinician who furnishes care to the patient only as requested by another clinician or subsequent and related services requested by another clinician; this modifier is reported for patient relationships that may not be adequately captured by the above alternative categories; reporting clinician service examples include but are not limited to, the radiologist's interpretation of an imaging study requested by another clinician
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
X4 Episodic/focused services: for reporting services by clinicians who provide focused care on particular types of treatment limited to a defined period and circumstance; the patient has a problem, acute or chronic, that will be treated with surgery, radiation, or some other type of generally time-limited intervention; reporting clinician service examples include but are not limited to, the orthopedic surgeon performing a knee replacement and seeing the patient through the postoperative period
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
52 Reduced services: under certain circumstances a service or procedure is partially reduced or eliminated at the discretion of the physician or other qualified health care professional. under these circumstances the service provided can be identified by its usual procedure number and the addition of modifier 52, signifying that the service is reduced. this provides a means of reporting reduced services without disturbing the identification of the basic service. note: for hospital outpatient reporting of a previously scheduled procedure/service that is partially reduced or cancelled as a result of extenuating circumstances or those that threaten the well-being of the patient prior to or after administration of anesthesia, see modifiers 73 and 74 (see modifiers approved for asc hospital outpatient use).
62 Two surgeons: when 2 surgeons work together as primary surgeons performing distinct part(s) of a procedure, each surgeon should report his/her distinct operative work by adding modifier 62 to the procedure code and any associated add-on code(s) for that procedure as long as both surgeons continue to work together as primary surgeons. each surgeon should report the co-surgery once using the same procedure code. if additional procedure(s) (including add-on procedure(s) are performed during the same surgical session, separate code(s) may also be reported with modifier 62 added. note: if a co-surgeon acts as an assistant in the performance of additional procedure(s), other than those reported with the modifier 62, during the same surgical session, those services may be reported using separate procedure code(s) with modifier 80 or modifier 82 added, as appropriate.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AG Primary physician
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CC Procedure code change (use 'cc' when the procedure code submitted was changed either for administrative reasons or because an incorrect code was filed)
CR Catastrophe/disaster related
ET Emergency services
GV Attending physician not employed or paid under arrangement by the patient's hospice provider
GW Service not related to the hospice patient's terminal condition
GX Notice of liability issued, voluntary under payer policy
GZ Item or service expected to be denied as not reasonable and necessary
KT Beneficiary resides in a competitive bidding area and travels outside that competitive bidding area and receives a competitive bid item
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2013-01-01 Added Added
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