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Official Description

Right heart catheterization for congenital heart defect(s) including imaging guidance by the proceduralist to advance the catheter to the target zone; normal native connections

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A right heart catheterization is a specialized medical procedure performed to assess and diagnose congenital heart defects in patients. This procedure involves the insertion of a catheter into the right side of the heart to evaluate the structure and function of the heart chambers and associated blood vessels. The process begins with the preparation of the catheter access site, typically located in the right femoral vein in the groin area. After cleansing the skin, a local anesthetic is administered to minimize discomfort. A small incision is made, allowing for the insertion of a needle into the blood vessel, followed by the placement of a sheath to facilitate catheter insertion. The catheter is guided through the venous system, traversing the femoral vein, external iliac vein, and inferior vena cava, ultimately reaching the right atrium. Once in position, the catheter is advanced into the right ventricle and subsequently into the pulmonary arteries. During this journey, the proceduralist inspects the right heart chambers and evaluates any congenital anomalies present. Key measurements, such as blood pressure in the right atrium and ventricle, as well as oxygen saturation levels, are obtained to provide critical information regarding the patient's cardiac function. The procedure also includes a thorough examination of the tricuspid and pulmonary valves for any abnormalities. In some cases, a separate angiogram may be performed to visualize the right heart chambers and pulmonary arteries more clearly. It is important to note that even when congenital anomalies are present, the procedure is classified as right heart catheterization, as the catheter is still navigating the right side of the heart. Understanding the connections between the cardiac chambers and great vessels is essential for diagnosing congenital heart disease, as normal connections facilitate expected blood flow patterns, while abnormal connections can lead to significant clinical implications.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The right heart catheterization procedure is indicated for patients with congenital heart defects, which may include a variety of structural anomalies affecting the heart's chambers and blood vessels. The following conditions are explicitly recognized as indications for this procedure:

  • Acyanotic defects such as atrial septal defects, ventricular septal defects, or patent ductus arteriosus, where normal blood flow is disrupted but does not lead to cyanosis.
  • Cyanotic defects including double outlet right ventricle, endocardial cushion defects, tetralogy of Fallot, total anomalous pulmonary veins, and transposition of the great vessels, where abnormal connections result in inadequate oxygenation of the blood.

2. Procedure

The right heart catheterization procedure involves several critical steps to ensure accurate assessment and diagnosis of congenital heart defects. The following procedural steps are performed:

  • Step 1: Preparation - The patient is positioned appropriately, and the skin over the catheter access site, typically the right femoral vein, is cleansed to reduce the risk of infection. A local anesthetic is then injected to minimize discomfort during the procedure.
  • Step 2: Accessing the Vein - A small stab incision is made in the skin, and a needle is inserted into the blood vessel. Following this, a sheath is placed to facilitate the introduction of the catheter.
  • Step 3: Catheter Insertion - A guidewire is threaded through the femoral vein, advancing through the external iliac vein and inferior vena cava until it reaches the right atrium. The catheter is then inserted over the guidewire into the inferior vena cava.
  • Step 4: Advancing the Catheter - The catheter is carefully passed into the right atrium, then into the right ventricle, and finally into the pulmonary arteries. This allows for direct visualization and assessment of the right heart chambers.
  • Step 5: Evaluation - As the catheter traverses the right side of the heart, the proceduralist inspects the heart chambers for any congenital anomalies. Blood pressure measurements in the right atrium and ventricle are obtained, and oxygen levels are assessed to evaluate cardiac function.
  • Step 6: Valve Inspection - The tricuspid and pulmonary valves are examined for any structural abnormalities that may contribute to the patient's condition.
  • Step 7: Angiography (if applicable) - A separately reportable angiogram of the right heart chambers and/or pulmonary arteries may be performed to provide further diagnostic information.
  • Step 8: Conclusion of Procedure - Upon completion of the catheterization, the catheter is withdrawn, and compression is applied to the venous access site to prevent bleeding. A dressing is then applied to the site to promote healing.

3. Post-Procedure

After the right heart catheterization procedure, patients are typically monitored for any complications or adverse effects. Expected recovery includes observation for bleeding at the access site and monitoring vital signs to ensure stability. Patients may experience some discomfort or bruising at the catheter insertion site, which usually resolves within a few days. It is essential to provide post-procedure care instructions, including activity restrictions and signs of potential complications, such as excessive bleeding or signs of infection, to ensure a safe recovery.

Short Descr R HRT CATH CHD NML NT CNJ
Medium Descr R HRT CATH CHD W/IMG CATH TRGT ZONE NML NT CONNJ
Long Descr Right heart catheterization for congenital heart defect(s) including imaging guidance by the proceduralist to advance the catheter to the target zone; normal native connections
Status Code Carriers Price the 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
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) none
MUE 1

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

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)
93563 Addon Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective coronary angiography during congenital heart catheterization (List separately in addition to code for primary procedure)
93564 Addon Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective opacification of aortocoronary venous or arterial bypass graft(s) (eg, aortocoronary saphenous vein, free radial artery, or free mammary artery graft) to one or more coronary arteries and in situ arterial conduits (eg, internal mammary), whether native or used for bypass to one or more coronary arteries during congenital heart catheterization, when performed (List separately in addition to code for primary procedure)
93565 Add-on Code MPFS Status: Active Code APC N Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective left ventricular or left atrial angiography (List separately in addition to code for primary procedure)
93566 Addon Code MPFS Status: Active Code APC N ASC N1 Injection procedure during cardiac catheterization including imaging supervision, interpretation, and report; for selective right ventricular or right atrial angiography (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)
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)
93571 Addon Code MPFS Status: Carrier Priced APC N ASC N1 CPT Assistant Article Intravascular Doppler velocity and/or pressure derived coronary flow reserve measurement (coronary vessel or graft) during coronary angiography including pharmacologically induced stress; initial vessel (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)
93584 Add-on Code Resequenced Code MPFS Status: Active Code APC N Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; anomalous or persistent superior vena cava when it exists as a second contralateral superior vena cava, with native drainage to heart (List separately in addition to code for primary procedure)
93585 Add On Code Resequenced Code MPFS Status: Active Code APC N Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; azygos/hemiazygos venous system (List separately in addition to code for primary procedure)
93586 Add On Code Resequenced Code MPFS Status: Active Code APC N Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; coronary sinus (List separately in addition to code for primary procedure)
93587 Add On Code Resequenced Code MPFS Status: Active Code APC N Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; venovenous collaterals originating at or above the heart (eg, from innominate vein) (List separately in addition to code for primary procedure)
93588 Add On Code Resequenced Code MPFS Status: Active Code APC N Venography for congenital heart defect(s), including catheter placement, and radiological supervision and interpretation; venovenous collaterals originating below the heart (eg, from the inferior vena cava) (List separately in addition to code for primary procedure)
93598 Add-on Code MPFS Status: Carrier Priced APC N Cardiac output measurement(s), thermodilution or other indicator dilution method, performed during cardiac catheterization for the evaluation of congenital heart defects (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)
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.
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.
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).
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
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
2022-01-01 Added Code added
Code
Description
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