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Official Description

Selective catheter placement, subclavian or innominate 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 36225 refers to a specific medical procedure known as selective catheter placement in the subclavian or innominate artery, performed unilaterally. This procedure involves the precise placement of a catheter into either the right innominate (brachiocephalic) artery or the left subclavian artery, allowing for detailed imaging of the blood vessels in the neck and brain region. The procedure is typically conducted using a percutaneous approach, which means that the catheter is inserted through the skin into the artery, often utilizing access points such as the femoral, axillary, brachial, or radial arteries. The most common method involves a retrograde approach through the femoral artery. During the procedure, a small incision is made at the site of catheter insertion, and an introducer sheath is placed into the artery to facilitate the passage of a guidewire. The guidewire is then navigated through the arterial system, advancing through the femoral and iliac arteries into the aorta, and subsequently into the aortic arch. The catheter is carefully maneuvered over the guidewire to reach the designated artery, either the left subclavian or the right innominate artery, without advancing into the vertebral artery. Once the catheter is positioned correctly, radiopaque contrast media is injected to visualize the blood vessels, allowing for angiography of the ipsilateral vertebral circulation. This imaging may also include the cervicocerebral arch if performed. The procedure encompasses all necessary radiological supervision and interpretation, ensuring that the findings are documented comprehensively. After the imaging is completed, the catheter is removed, and hemostasis is achieved at the insertion site, concluding the procedure with a written interpretation of the results provided for further analysis and record-keeping.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 36225 is indicated for various clinical scenarios where detailed visualization of the subclavian or innominate artery and associated vertebral circulation is necessary. The following conditions may warrant this procedure:

  • Evaluation of Vascular Pathologies This procedure is performed to assess for abnormalities such as stenosis, occlusions, or aneurysms in the subclavian or innominate arteries.
  • Preoperative Planning It may be indicated for planning surgical interventions or endovascular procedures involving the cervical or cerebral vasculature.
  • Investigation of Neurological Symptoms The procedure can be utilized in patients presenting with neurological symptoms that may be related to vascular insufficiency in the vertebral circulation.
  • Assessment of Trauma It is indicated in cases of trauma where vascular injury to the subclavian or innominate arteries is suspected.

2. Procedure

The procedure for CPT® Code 36225 involves several critical steps to ensure accurate catheter placement and imaging. The following outlines the procedural steps:

  • Step 1: Access Site Preparation A small skin incision is made at the chosen access site, typically over the femoral, axillary, brachial, or radial artery. This incision allows for the introduction of the catheter and associated equipment.
  • Step 2: Introducer Sheath Placement An introducer sheath is inserted into the artery to facilitate the passage of a guidewire. This sheath serves as a conduit for the catheter and minimizes trauma to the vessel.
  • Step 3: Guidewire Navigation A guidewire is advanced through the introducer sheath and manipulated through the femoral and iliac arteries into the aorta. Under continuous fluoroscopic guidance, the guidewire is navigated 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 innominate artery. The guidewire is carefully retracted, and the catheter is maneuvered into the artery, ensuring it is positioned below the vertebral artery branch.
  • Step 5: Contrast Injection and Imaging Once the catheter is correctly positioned, radiopaque contrast media is injected to visualize the arterial structures. 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 6: Catheter Removal and Hemostasis Upon completion of the imaging, the catheter is removed. Hemostasis is achieved by applying pressure to the arteriotomy site or utilizing another closure technique to prevent bleeding.

3. Post-Procedure

After the completion of the procedure associated with CPT® Code 36225, several post-procedure care steps are essential. The patient is monitored for any signs of complications, such as bleeding or hematoma formation at the access site. The healthcare provider will ensure that hemostasis is adequately achieved and may apply a pressure dressing if necessary. Patients are typically advised to rest and avoid strenuous activities for a specified period to promote healing. A written interpretation of the findings from the angiography is provided, which is crucial for further clinical decision-making and follow-up care. The healthcare team will discuss the results with the patient and outline any further diagnostic or therapeutic steps that may be required based on the findings.

Short Descr PLACE CATH SUBCLAVIAN ART
Medium Descr SLCTV CATH SUBCLAVIAN ART ANGIO VERTEBRAL ARTERY
Long Descr Selective catheter placement, subclavian or innominate 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)
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.
LT Left side (used to identify procedures performed on the left side of the body)
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).
RT Right side (used to identify procedures performed on the right side of the body)
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
GC This service has been performed in part by a resident under the direction of a teaching physician
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
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).
53 Discontinued procedure: under certain circumstances, the physician or other qualified health care professional may elect to terminate a surgical or diagnostic procedure. due to extenuating circumstances or those that threaten the well being of the patient, it may be necessary to indicate that a surgical or diagnostic procedure was started but discontinued. this circumstance may be reported by adding modifier 53 to the code reported by the individual for the discontinued procedure. note: this modifier is not used to report the elective cancellation of a procedure prior to the patient's anesthesia induction and/or surgical preparation in the operating suite. for outpatient hospital/ambulatory surgery center (asc) 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).
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.
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).
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CR Catastrophe/disaster related
GA Waiver of liability statement issued as required by payer policy, individual case
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
GZ Item or service expected to be denied as not reasonable and necessary
KX Requirements specified in the medical policy have been met
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
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
RE Furnished in full compliance with fda-mandated risk evaluation and mitigation strategy (rems)
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
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
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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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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