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Official Description

Selective catheter placement (first-order), main renal artery and any accessory renal artery(s) for renal angiography, including arterial puncture and catheter placement(s), fluoroscopy, contrast injection(s), image postprocessing, permanent recording of images, and radiological supervision and interpretation, including pressure gradient measurements when performed, and flush aortogram when performed; bilateral

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Common Language Description

A selective catheter placement in the main renal artery and any accessory renal arteries is a specialized procedure performed for renal angiography. This procedure involves the introduction of a catheter into the renal arteries to visualize the blood vessels supplying the kidneys. The process typically begins with the insertion of a catheter into an extremity artery, most commonly the femoral artery located in the groin area. A small incision is made at the insertion site to facilitate access to the artery. An introducer sheath is then placed within the artery, followed by the insertion of a guidewire. If the right femoral artery is selected for access, the guidewire is carefully navigated through the femoral and iliac arteries, advancing into the aorta under fluoroscopic guidance, which allows for real-time imaging during the procedure. Once the guidewire is positioned correctly, a catheter is advanced over it into the aorta. The guidewire is subsequently maneuvered into the main renal artery and any accessory renal arteries. The physician skillfully manipulates the catheter over the guidewire until it reaches the desired location within the renal arteries. After the guidewire is removed, the physician may inject medication or radiopaque contrast media to enhance the visibility of the renal arteries during imaging. Additionally, pressure gradient measurements may be taken to assess any narrowing in the renal arteries that could impact blood flow to the kidneys. The procedure includes obtaining images, processing them, and making permanent recordings as necessary. Finally, the physician reviews the captured images and recordings, providing a comprehensive written report of the findings. For coding purposes, it is important to note that CPT® Code 36251 is used for a selective unilateral renal angiogram, while CPT® Code 36252 is designated for a selective bilateral study.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The selective catheter placement in the main renal artery and any accessory renal arteries is indicated for various clinical scenarios, including:

  • Evaluation of Renal Artery Stenosis This procedure is performed to assess for narrowing of the renal arteries, which can lead to hypertension and renal impairment.
  • Investigation of Renal Vascular Disease It is utilized to investigate conditions affecting the blood supply to the kidneys, including atherosclerosis or fibromuscular dysplasia.
  • Preoperative Assessment The procedure may be indicated as part of the preoperative evaluation for renal surgeries or interventions.
  • Assessment of Renal Blood Flow It is used to measure blood flow dynamics and pressure gradients within the renal arteries, which can help in diagnosing renal artery occlusion or other vascular abnormalities.

2. Procedure

The procedure for selective catheter placement in the renal arteries involves several critical steps:

  • Step 1: Accessing the Femoral Artery The procedure begins with the patient positioned appropriately, and a small incision is made over the femoral artery in the groin. An introducer sheath is then placed into the artery to facilitate catheter insertion.
  • Step 2: Inserting the Guidewire A guidewire is introduced through the introducer sheath and advanced through the femoral and iliac arteries into the aorta. This step is performed under fluoroscopic guidance to ensure accurate placement.
  • Step 3: Advancing the Catheter A catheter is then advanced over the guidewire into the aorta. The guidewire is maneuvered into the main renal artery and any accessory renal arteries, allowing the physician to position the catheter precisely at the desired location.
  • Step 4: Performing the Angiography Once the catheter is in place, the guidewire is removed. The physician may inject radiopaque contrast media to visualize the renal arteries. Pressure gradient measurements may also be taken to evaluate any narrowing that could affect blood flow.
  • Step 5: Imaging and Documentation Images of the renal arteries are obtained and processed, with permanent recordings made as necessary. The physician reviews these images and prepares a written report detailing the findings of the angiography.

3. Post-Procedure

After the selective catheter placement and renal angiography, the patient is typically monitored for any complications related to the procedure, such as bleeding or hematoma at the access site. The physician may provide specific post-procedure care instructions, including activity restrictions and signs of potential complications to watch for. Follow-up imaging or assessments may be scheduled to evaluate the results of the procedure and any necessary interventions based on the findings.

Short Descr INS CATH REN ART 1ST BILAT
Medium Descr SLCTV CATH 1STORD W/WO ART PUNCT/FLUOR/S&I BIL
Long Descr Selective catheter placement (first-order), main renal artery and any accessory renal artery(s) for renal angiography, including arterial puncture and catheter placement(s), fluoroscopy, contrast injection(s), image postprocessing, permanent recording of images, and radiological supervision and interpretation, including pressure gradient measurements when performed, and flush aortogram when performed; bilateral
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) 2 - 150% payment adjustment does NOT apply.
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) P2F - Major procedure, cardiovascular-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.

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).
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.
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.
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.
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.
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)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
CR Catastrophe/disaster related
GC This service has been performed in part by a resident under the direction of a teaching physician
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
LT Left side (used to identify procedures performed on the left side of the body)
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
RT Right side (used to identify procedures performed on the right side of the body)
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
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
Date
Action
Notes
2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2013-01-01 Changed Medium Descriptor changed.
2012-01-01 Added Added
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