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Official Description

Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; additional prosthesis(es) during same session (List separately in addition to code for primary procedure)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The transcatheter mitral valve repair procedure, identified by CPT® Code 33419, is a minimally invasive technique aimed at addressing mitral valve regurgitation. This condition arises when the mitral valve's anterior and posterior leaflets do not close completely during ventricular systole, resulting in the backflow of blood into the left atrium. The procedure typically employs an edge-to-edge leaflet repair method, utilizing a prosthesis such as the MitraClip, which is designed to enhance the physiological function of the mitral valve and significantly reduce regurgitation. The approach is percutaneous, meaning it is performed through the skin, and often involves a transseptal puncture, which is the creation of an opening in the septum of the heart to access the left atrium. During the procedure, advanced imaging techniques such as fluoroscopy and transesophageal echocardiography (TEE) are utilized to guide the placement of the prosthesis accurately. A steerable guide catheter is introduced into the vascular system, followed by the advancement of a dilator to facilitate access to the left atrium. This careful approach minimizes the risk of damage to the surrounding cardiac structures. Once the prosthesis is positioned correctly above the regurgitant area, it is deployed to create a double orifice opening, allowing for improved blood flow. The use of CPT® Code 33419 is specifically for instances where additional prosthesis(es) are required during the same session, complementing the primary procedure denoted by CPT® Code 33418.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The transcatheter mitral valve repair procedure is indicated for patients experiencing mitral valve regurgitation, which can lead to various complications if left untreated. The following conditions may warrant this procedure:

  • Mitral Valve Regurgitation - A condition where the mitral valve fails to close properly, allowing blood to flow backward into the left atrium during ventricular contraction.
  • Heart Failure Symptoms - Patients exhibiting symptoms of heart failure, such as shortness of breath, fatigue, and fluid retention, may benefit from this intervention.
  • Severe Mitral Valve Dysfunction - Patients with significant mitral valve dysfunction that impacts their quality of life and overall cardiac function.

2. Procedure

The transcatheter mitral valve repair procedure involves several critical steps to ensure successful implantation of the prosthesis:

  • Step 1: Accessing the Vascular System - The procedure begins with the introduction of a steerable guide catheter into the vascular system using standard techniques. This catheter serves as the primary access point for subsequent instruments.
  • Step 2: Transseptal Puncture - A dilator is advanced over the guide catheter and across the septum into the left atrium. This step is crucial as it dilates the vascular pathway, reducing the risk of damage to the cardiac walls when larger instruments are introduced.
  • Step 3: Introduction of the Prosthesis - After the dilator is removed, the prosthesis and its delivery catheter are introduced into the left atrium. The prosthesis is positioned strategically above the regurgitant area with its arms open, ready for deployment.
  • Step 4: Deployment of the Prosthesis - Once optimal reduction of regurgitation is visualized, the prosthesis is advanced into the left ventricle below the valve leaflets. This positioning is critical for effective closure of the mitral valve.
  • Step 5: Attachment of the Clip - The clip is then attached to each leaflet of the mitral valve, and the clip arms are closed. This action creates a double orifice opening, allowing for improved blood flow on either side of the valve.
  • Step 6: Completion of the Procedure - Finally, the catheter is removed, and the polyester-covered metal clip is retained within the heart, completing the repair process.

3. Post-Procedure

After the transcatheter mitral valve repair procedure, patients are typically monitored for any immediate complications. Post-procedure care may include observation in a recovery area, where vital signs are closely monitored. Patients may experience some discomfort or transient symptoms as they recover from the anesthesia and the procedure itself. Follow-up appointments are essential to assess the function of the mitral valve and the effectiveness of the repair. Additional imaging studies, such as echocardiograms, may be performed to evaluate the success of the procedure and ensure that the regurgitation has been adequately addressed. Patients are also advised on activity restrictions and medication management to support their recovery and overall heart health.

Short Descr REPAIR TCAT MITRAL VALVE
Medium Descr TCAT MITRAL VALVE REPAIR ADDL PROSTHESIS
Long Descr Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; additional prosthesis(es) during same session (List separately in addition to code for primary procedure)
Status Code Active Code
Global Days ZZZ - Code Related to Another Service
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 1 - Co-surgeons could be paid, though supporting documentation is required...
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Items and Services Packaged into APC Rates
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

This is an add-on code that must be used in conjunction with one of these primary codes.

33418 MPFS Status: Active Code APC C Transcatheter mitral valve repair, percutaneous approach, including transseptal puncture when performed; initial prosthesis
33141 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting PUB 100 CPT Assistant Article Transmyocardial laser revascularization, by thoracotomy; performed at the time of other open cardiac procedure(s) (List separately in addition to code for primary procedure)
33530 Addon Code MPFS Status: Active Code APC C Physician Quality Reporting CPT Assistant Article Illustration for Code Reoperation, coronary artery bypass procedure or valve procedure, more than 1 month after original operation (List separately in addition to code for primary procedure)
93568 Addon Code MPFS Status: Active Code APC N ASC N1 Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for nonselective pulmonary arterial angiography (List separately in addition to code for primary procedure)
93569 Add-on Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective pulmonary arterial angiography, unilateral (List separately in addition to code for primary procedure)
93573 Add-on Code Resequenced Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective pulmonary arterial angiography, bilateral (List separately in addition to code for primary procedure)
93574 Add-on Code Resequenced Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective pulmonary venous angiography of each distinct pulmonary vein during cardiac catheterization (List separately in addition to code for primary procedure)
93575 Add-on Code Resequenced Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective pulmonary angiography of major aortopulmonary collateral arteries (MAPCAs) arising off the aorta or its systemic branches, during cardiac catheterization for congenital heart defects, each distinct vessel (List separately in addition to code for primary procedure)
Q0 Investigational clinical service provided in a clinical research study that is in an approved clinical research study
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.
GC This service has been performed in part by a resident under the direction of a teaching physician
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).
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.
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.
63 Procedure performed on infants less than 4 kg: procedures performed on neonates and infants up to a present body weight of 4 kg may involve significantly increased complexity and physician or other qualified health care professional work commonly associated with these patients. this circumstance may be reported by adding modifier 63 to the procedure number. note: unless otherwise designated, this modifier may only be appended to procedures/services listed in the 20100-69990 code series and 92920, 92928, 92953, 92960, 92986, 92987, 92990, 92997, 92998, 93312, 93313, 93314, 93315, 93316, 93317, 93318, 93452, 93505, 93563, 93564, 93568, 93569, 93573, 93574, 93575, 93580, 93581, 93582, 93590, 93591, 93592, 93593, 93594, 93595, 93596, 93597, 93598, 93615, 93616 from the medicine/ cardiovascular section. modifier 63 should not be appended to any cpt codes listed in the evaluation and management services, anesthesia, radiology, pathology and laboratory, or medicine sections (other than those identified above from the medicine/cardiovascular section).
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.)
AO Alternate payment method declined by provider of service
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
KX Requirements specified in the medical policy have been met
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
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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2015-01-01 Added Added
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