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Official Description

Left heart catheterization including intraprocedural injection(s) for left ventriculography, imaging supervision and interpretation, when performed

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

Left heart catheterization is a diagnostic procedure that involves the insertion of a catheter into the left side of the heart to assess its function and structure. This procedure typically begins with the cleansing of the skin over a selected artery, such as the brachial, axillary, or femoral artery, followed by the administration of a local anesthetic to minimize discomfort. A needle is then used to puncture the artery, and a sheath is placed to facilitate the introduction of a guidewire. Under radiological supervision, the guidewire is carefully threaded retrograde through the artery and into the aorta, ultimately reaching the left side of the heart, which includes the left ventricle and left atrium. A catheter is then advanced over the guidewire, which is subsequently removed. During the procedure, the aortic valve, left ventricle, mitral valve, and left atrium are inspected for any abnormalities. Additionally, left ventricular and atrial pressures are measured, and pressure gradients across the aortic and mitral valves are assessed to evaluate cardiac function. Contrast media may be injected to obtain a left ventriculogram, which provides detailed imaging of the left ventricle's structure and function. In some cases, a separately reportable angiogram of the aorta may also be performed to visualize the aorta's condition. Upon completion of the procedure, the catheter is withdrawn, and compression is applied to the arterial puncture site to prevent bleeding, followed by the application of a compression dressing. The results of the left heart catheterization and ventriculogram are thoroughly reviewed, and a written report detailing the findings is generated for further evaluation and management.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

Left heart catheterization is performed for various clinical indications, including but not limited to the following:

  • Assessment of Coronary Artery Disease This procedure is utilized to evaluate the presence and severity of coronary artery disease, which can lead to ischemic heart conditions.
  • Evaluation of Heart Function It is indicated for assessing the function of the left ventricle and left atrium, particularly in patients with heart failure or other cardiac dysfunctions.
  • Measurement of Cardiac Pressures The procedure allows for the measurement of left ventricular and atrial pressures, which is crucial in diagnosing various cardiac conditions.
  • Investigation of Valvular Heart Disease It is indicated for evaluating the function of the aortic and mitral valves, particularly in cases of suspected valvular heart disease.
  • Preoperative Assessment Left heart catheterization may be performed as part of the preoperative evaluation for patients undergoing cardiac surgery.

2. Procedure

The left heart catheterization procedure involves several critical steps, each designed to ensure accurate assessment and safety for the patient:

  • Preparation and Anesthesia The procedure begins with the cleansing of the skin over the selected artery, such as the brachial, axillary, or femoral artery. A local anesthetic is administered to minimize discomfort during the procedure.
  • Arterial Puncture and Sheath Placement A needle is then used to puncture the artery, and a sheath is placed to facilitate the introduction of a guidewire. This step is crucial for accessing the vascular system safely.
  • Guidewire Insertion Under radiological supervision, a guidewire is inserted and threaded retrograde through the artery, into the aorta, and into the left side of the heart, specifically the left ventricle and left atrium. This step allows for the subsequent placement of the catheter.
  • Catheter Advancement A catheter is threaded over the guidewire into the left side of the heart. Once the catheter is in place, the guidewire is removed, allowing for direct access to the heart chambers.
  • Inspection and Pressure Measurement The aortic valve, left ventricle, mitral valve, and left atrium are inspected for any abnormalities. Left ventricular and atrial pressures are obtained, and pressure gradients across the aortic and mitral valves are measured to assess cardiac function.
  • Contrast Injection and Imaging Contrast media is injected to obtain a left ventriculogram, which provides detailed imaging of the left ventricle's structure and function. This imaging is essential for diagnosing various cardiac conditions.
  • Completion of the Procedure After the necessary assessments and imaging are completed, the catheter is withdrawn. Compression is applied over the arterial puncture site to prevent bleeding, followed by the application of a compression dressing to ensure hemostasis.
  • Documentation of Findings The results of the left heart catheterization and ventriculogram are reviewed, and a written report detailing the findings is generated for further evaluation and management.

3. Post-Procedure

After the completion of left heart catheterization, patients are typically monitored for any complications related to the procedure. It is essential to observe the arterial puncture site for signs of bleeding or hematoma formation. Patients may be advised to rest and limit physical activity for a specified period to promote healing. Follow-up appointments may be scheduled to discuss the findings of the procedure and any necessary further management or treatment based on the results. Additionally, patients should be informed about potential symptoms to watch for, such as increased pain at the puncture site, swelling, or signs of infection, and instructed to seek medical attention if these occur.

Short Descr LEFT HRT CATH W/VENTRCLGRPHY
Medium Descr L HRT CATH W/NJX L VENTRICULOGRAPHY IMG S&I
Long Descr Left heart catheterization including intraprocedural injection(s) for left ventriculography, imaging supervision and interpretation, when performed
Status Code Active Code
Global Days 000 - Endoscopic or Minor Procedure
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
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) 0 - 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 Hospital Part B services paid through a comprehensive APC
ASC Payment Indicator Non office-based surgical procedure added in CY 2008 or later; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P2F - Major procedure, cardiovascular-Other
MUE 1
CCS Clinical Classification 47 - Diagnostic cardiac catheterization, coronary arteriography

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

93462 Addon Code MPFS Status: Active Code APC N ASC N1 Left heart catheterization by transseptal puncture through intact septum or by transapical puncture (List separately in addition to code for primary procedure)
93463 Addon Code MPFS Status: Active Code APC N Pharmacologic agent administration (eg, inhaled nitric oxide, intravenous infusion of nitroprusside, dobutamine, milrinone, or other agent) including assessing hemodynamic measurements before, during, after and repeat pharmacologic agent administration, when performed (List separately in addition to code for primary procedure)
93464 Addon Code MPFS Status: Active Code APC N Physiologic exercise study (eg, bicycle or arm ergometry) including assessing hemodynamic measurements before and after (List separately in addition to code for primary procedure)
93567 Addon Code MPFS Status: Active Code APC N ASC N1 Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for supravalvular aortography (List separately in addition to code for primary procedure)
93662 Addon Code MPFS Status: Carrier Priced APC N PUB 100 CPT Assistant Article Intracardiac echocardiography during therapeutic/diagnostic intervention, including imaging supervision and interpretation (List separately in addition to code for primary procedure)
G0278 Add-on Code Medicare Coverage: Carrier Priced MPFS Status: Active Code APC N Iliac and/or femoral artery angiography, non-selective, bilateral or ipsilateral to catheter insertion, performed at the same time as cardiac catheterization and/or coronary angiography, includes positioning or placement of the catheter in the distal aorta or ipsilateral femoral or iliac artery, injection of dye, production of permanent images, and radiologic supervision and interpretation (list separately in addition to primary procedure)
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
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.
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).
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
GC This service has been performed in part by a resident under the direction of a teaching physician
Q1 Routine clinical service provided in a clinical research study that is in an approved clinical research study
TC Technical component; under certain circumstances, a charge may be made for the technical component alone; under those circumstances the technical component charge is identified by adding modifier 'tc' to the usual procedure number; technical component charges are institutional charges and not billed separately by physicians; however, portable x-ray suppliers only bill for technical component and should utilize modifier tc; the charge data from portable x-ray suppliers will then be used to build customary and prevailing profiles
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.
25 Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service: it may be necessary to indicate that on the day a procedure or service identified by a cpt code was performed, the patient's condition required a significant, separately identifiable e/m service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. a significant, separately identifiable e/m service is defined or substantiated by documentation that satisfies the relevant criteria for the respective e/m service to be reported (see evaluation and management services guidelines for instructions on determining level of e/m service). the e/m service may be prompted by the symptom or condition for which the procedure and/or service was provided. as such, different diagnoses are not required for reporting of the e/m services on the same date. this circumstance may be reported by adding modifier 25 to the appropriate level of e/m service. note: this modifier is not used to report an e/m service that resulted in a decision to perform surgery. see modifier 57 for significant, separately identifiable non-e/m services, see modifier 59.
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.
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
AO Alternate payment method declined by provider of service
AQ Physician providing a service in an unlisted health professional shortage area (hpsa)
CR Catastrophe/disaster related
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
LD Left anterior descending coronary artery
LM Left main coronary artery
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
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
RC Right coronary artery
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
Date
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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2011-01-01 Added Added
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