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Official Description

Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of intracoronary stent, atherectomy and angioplasty, including distal protection when performed; single vessel

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The procedure described by CPT® Code 92937 involves the percutaneous transluminal revascularization of a coronary artery bypass graft that may be occluded or narrowed due to stenosis. This intervention is performed through the use of various techniques, including angioplasty, atherectomy, and the placement of intracoronary stents. The goal of this procedure is to restore blood flow through the bypass graft, which may have become compromised. The access point for this procedure is typically through the femoral artery, where the skin is prepped and punctured to insert a sheath. A guidewire is then navigated into the occluded graft, allowing for further evaluation and treatment. The use of radiological supervision is essential during this process to ensure accurate placement and monitoring of the devices used. The procedure may involve the inflation of a balloon to compress plaque against the arterial wall, the shaving of plaque through atherectomy, or the deployment of a stent to maintain the graft's patency. Following the intervention, a completion angiography is performed to confirm the success of the revascularization, ensuring that the artery is open and blood flow is restored. This procedure is specifically coded as 92937 when a single vessel is treated, with additional codes available for further branches involved in the bypass graft.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure described by CPT® Code 92937 is indicated for patients who have an occluded or stenosed coronary artery bypass graft. The following conditions may warrant this intervention:

  • Coronary Artery Disease - Patients with a history of coronary artery disease may experience blockages in their bypass grafts, necessitating revascularization.
  • Angina Pectoris - Patients presenting with chest pain due to inadequate blood flow through the bypass graft may require this procedure to alleviate symptoms.
  • Myocardial Ischemia - Individuals showing signs of reduced blood flow to the heart muscle may benefit from revascularization to restore adequate perfusion.

2. Procedure

The procedure involves several critical steps to ensure successful revascularization of the coronary artery bypass graft:

  • Access Site Preparation The physician begins by preparing the skin over the access artery, typically the femoral artery. This involves cleaning the area to reduce the risk of infection.
  • Artery Puncture and Sheath Insertion A needle is used to puncture the artery, and a sheath is placed to facilitate the introduction of other devices. This sheath serves as a conduit for the guidewire and catheters.
  • Guidewire Advancement A guidewire is inserted through the sheath and advanced into the occluded coronary artery bypass graft. This step is crucial for navigating the graft and positioning the necessary tools for revascularization.
  • Evaluation of the Bypass Graft A catheter is advanced over the guidewire to evaluate the condition of the bypass graft. This assessment helps determine the extent of the blockage and the appropriate intervention.
  • Distal Embolic Protection Device Placement If indicated, a distal embolic protection device is placed to capture any debris that may dislodge during the procedure, preventing it from traveling downstream.
  • Angioplasty If angioplasty is performed, a balloon catheter is advanced to the site of the occlusion. The balloon is inflated to compress the plaque against the arterial wall, which may be done multiple times to achieve optimal results.
  • Alternative Atherectomy Procedure Alternatively, atherectomy may be performed using a specialized catheter that shaves plaque from the arterial wall. The cutting piston of the atherectomy device removes plaque, which is collected in the device for removal upon completion.
  • Stent Placement If necessary, a stent delivery catheter is advanced to the site and deployed to maintain the artery's patency. The stent is carefully positioned and may require a balloon catheter to be inflated to ensure proper seating.
  • Completion Angiography After the intervention, contrast is injected, and completion angiography is performed to confirm that the artery is patent and blood flow is restored.
  • Catheter Removal and Site Care All catheters are removed, and pressure is applied to the vascular access site to prevent bleeding. A pressure dressing is then applied to secure the site.

3. Post-Procedure

Post-procedure care involves monitoring the patient for any complications, such as bleeding or hematoma at the access site. Patients may be advised to rest and limit physical activity for a specified period to promote healing. Follow-up appointments are typically scheduled to assess the success of the procedure and to monitor the patient's recovery. Additionally, the physician may provide instructions regarding medication management, including antiplatelet therapy, to prevent future occlusions.

Short Descr PRQ REVASC BYP GRAFT 1 VSL
Medium Descr PRQ TRLUML CORONARY BYP GRFT REVASC ONE VESSEL
Long Descr Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of intracoronary stent, atherectomy and angioplasty, including distal protection when performed; single vessel
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) 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) P2F - Major procedure, cardiovascular-Other
MUE 2
CCS Clinical Classification 45 - Percutaneous transluminal coronary angioplasty (PTCA)

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

92921 Addon Code Resequenced Code MPFS Status: Bundled Code APC N ASC N1 Percutaneous transluminal coronary angioplasty; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)
92925 Addon Code Resequenced Code MPFS Status: Bundled Code APC N Percutaneous transluminal coronary atherectomy, with coronary angioplasty when performed; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)
92929 Add-on Code Resequenced Code MPFS Status: Bundled Code APC N ASC N1 Percutaneous transcatheter placement of intracoronary stent(s), with coronary angioplasty when performed; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)
92934 Addon Code Resequenced Code MPFS Status: Bundled Code APC N Percutaneous transluminal coronary atherectomy, with intracoronary stent, with coronary angioplasty when performed; each additional branch of a major coronary artery (List separately in addition to code for primary procedure)
92938 Addon Code Resequenced Code MPFS Status: Bundled Code APC N Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of intracoronary stent, atherectomy and angioplasty, including distal protection when performed; each additional branch subtended by the bypass graft (List separately in addition to code for primary procedure)
92944 Addon Code Resequenced Code MPFS Status: Bundled Code APC N Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, coronary artery branch, or coronary artery bypass graft, any combination of intracoronary stent, atherectomy and angioplasty; each additional coronary artery, coronary artery branch, or bypass graft (List separately in addition to code for primary procedure)
92972 Add On Code Resequenced Code MPFS Status: Active Code APC N Percutaneous transluminal coronary lithotripsy (List separately in addition to code for primary procedure)
92973 Addon Code Resequenced Code MPFS Status: Active Code APC N CPT Assistant Article Illustration for Code Percutaneous transluminal coronary thrombectomy mechanical (List separately in addition to code for primary procedure)
92974 Addon Code Resequenced Code MPFS Status: Active Code APC N CPT Assistant Article Illustration for Code Transcatheter placement of radiation delivery device for subsequent coronary intravascular brachytherapy (List separately in addition to code for primary procedure)
92978 Addon Code CPT Resequenced MPFS Status: Carrier Priced APC N ASC N1 CPT Assistant Article Illustration for Code Endoluminal imaging of coronary vessel or graft using intravascular ultrasound (IVUS) or optical coherence tomography (OCT) during diagnostic evaluation and/or therapeutic intervention including imaging supervision, interpretation and report; initial vessel (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)
C9601 Add-on Code Medicare Coverage: Special Coverage Instructions APC N ASC N1 Percutaneous transcatheter placement of drug-eluting intracoronary stent(s), with coronary angioplasty when performed; each additional branch of a major coronary artery (list separately in addition to code for primary procedure)
C9603 Add-on Code Medicare Coverage: Special Coverage Instructions APC N Percutaneous transluminal coronary atherectomy, with drug-eluting intracoronary stent, with coronary angioplasty when performed; each additional branch of a major coronary artery (list separately in addition to code for primary procedure)
C9605 Add-on Code Medicare Coverage: Special Coverage Instructions APC N Percutaneous transluminal revascularization of or through coronary artery bypass graft (internal mammary, free arterial, venous), any combination of drug-eluting intracoronary stent, atherectomy and angioplasty, including distal protection when performed; each additional branch subtended by the bypass graft (list separately in addition to code for primary procedure)
C9608 Add-on Code Medicare Coverage: Special Coverage Instructions APC N Percutaneous transluminal revascularization of chronic total occlusion, coronary artery, coronary artery branch, or coronary artery bypass graft, any combination of drug-eluting intracoronary stent, atherectomy and angioplasty; each additional coronary artery, coronary artery branch, or bypass graft (list separately in addition to code for primary procedure)
RC Right coronary artery
LC Left circumflex coronary artery
LD Left anterior descending coronary artery
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).
GC This service has been performed in part by a resident under the direction of a teaching physician
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.
74 Discontinued out-patient hospital/ambulatory surgery center (asc) procedure after administration of anesthesia: due to extenuating circumstances or those that threaten the well being of the patient, the physician may terminate a surgical or diagnostic procedure after the administration of anesthesia (local, regional block(s), general) or after the procedure was started (incision made, intubation started, scope inserted, etc). under these circumstances, the procedure started but terminated can be reported by its usual procedure number and the addition of modifier 74. note: the elective cancellation of a service prior to the administration of anesthesia and/or surgical preparation of the patient should not be reported. for physician reporting of a discontinued procedure, see modifier 53.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 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).
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
LM Left main coronary artery
LT Left side (used to identify procedures performed on the left side of the body)
PD Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
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
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
RI Ramus intermedius coronary artery
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
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
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
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2017-01-01 Changed Moderate (Conscious) Sedation flag removed. See new Moderate Sedation category.
2013-01-01 Added Added
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