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Official Description

Introduction of catheter, right heart or main pulmonary artery

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 36013 involves the introduction of a catheter into the right heart or the main pulmonary artery. This is a critical procedure often performed to facilitate further diagnostic or therapeutic interventions. A catheter is a thin, flexible tube that can be inserted into the body to access various vascular structures. In this case, the catheter is introduced through a vein, typically the right femoral vein, although alternative sites such as the left femoral vein or an upper extremity vein may also be utilized. The procedure begins with a small incision at the chosen venous insertion site, allowing for the placement of an introducer sheath. This sheath serves as a conduit for the catheter, which is guided through the venous system into the heart. Once the catheter reaches the right atrium, it can be advanced into the right ventricle and subsequently into the main pulmonary artery. This access is crucial for various diagnostic purposes, including measuring pressures within the heart and pulmonary circulation, as well as for therapeutic interventions such as the administration of medications or contrast agents. The procedure may also involve selective catheterization of the left or right pulmonary arteries or even segmental or subsegmental branches, which are smaller arteries that branch off within the lungs. The ability to navigate these vascular structures allows for targeted treatment and assessment of pulmonary conditions. Overall, the introduction of a catheter into the right heart or main pulmonary artery is a fundamental procedure in interventional cardiology and pulmonary medicine, enabling a range of diagnostic and therapeutic options.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 36013 is indicated for various clinical scenarios where access to the right heart or main pulmonary artery is necessary. The following conditions may warrant this procedure:

  • Cardiac Evaluation: To assess hemodynamics and pressures within the right heart chambers and pulmonary artery.
  • Pulmonary Hypertension: To evaluate and manage conditions related to elevated blood pressure in the pulmonary arteries.
  • Diagnostic Imaging: To facilitate the injection of contrast media for imaging studies such as pulmonary angiography.
  • Therapeutic Interventions: To administer medications directly into the pulmonary circulation for conditions such as pulmonary embolism.

2. Procedure

The procedure for CPT® Code 36013 involves several critical steps to ensure successful catheterization of the right heart or main pulmonary artery. The following procedural steps are outlined:

  • Step 1: The procedure begins with the selection of the venous access site, typically the right femoral vein, although the left femoral vein or an upper extremity vein may also be used. A small skin incision is made over the chosen site to facilitate access.
  • Step 2: An introducer sheath is then placed into the vein. This sheath acts as a conduit for the catheter, allowing for easier manipulation and access to the vascular system.
  • Step 3: A guidewire is inserted through the introducer sheath. If the right femoral vein is the access point, the guidewire is carefully navigated through the femoral and iliac veins, advancing it into the inferior vena cava and subsequently into the right atrium.
  • Step 4: A pigtail catheter, which features a tip deflecting wire, is advanced over the guidewire into the right atrium. Once positioned, the guidewire is removed, leaving the catheter in place.
  • Step 5: The catheter may remain in the right atrium, or the tip deflecting wire can be utilized to further advance the catheter into the right ventricle and into the main pulmonary artery, depending on the clinical need.
  • Step 6: If selective catheterization is required, the catheter can be manipulated into the left or right pulmonary arteries or into segmental or subsegmental branches as necessary. This allows for targeted interventions or assessments within the pulmonary circulation.
  • Step 7: Throughout the procedure, the physician may perform injections of medication and/or radiopaque contrast as needed to visualize the vascular structures and assess the condition of the pulmonary arteries.

3. Post-Procedure

After the completion of the catheterization procedure, several post-procedure care steps are typically followed to ensure patient safety and monitor for any complications. The patient is usually observed for signs of bleeding or hematoma at the insertion site. Vital signs are monitored closely to assess for any changes in hemodynamic status. Depending on the specific clinical scenario, the catheter may be left in place for further interventions or removed after the procedure. Patients may be advised to limit physical activity for a short period to promote healing at the access site. Follow-up imaging or assessments may be scheduled to evaluate the outcomes of the procedure and ensure that no complications have arisen.

Short Descr PLACE CATHETER IN ARTERY
Medium Descr INTRO CATHETER RIGHT HEART/MAIN PULMONARY ARTERY
Long Descr Introduction of catheter, right heart or main pulmonary artery
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard 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) 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 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 2
CCS Clinical Classification 47 - Diagnostic cardiac catheterization, coronary arteriography

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).
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
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.
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.)
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
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
LT Left side (used to identify procedures performed on the left side of the body)
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
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
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
1992-01-01 Added First appearance in code book in 1992.
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