CPT® Code 0626T

Official Description

Automated quantification and characterization of coronary atherosclerotic plaque to assess severity of coronary disease, using data from coronary computed tomographic angiography; review of computerized analysis output to reconcile discordant data, interpretation and report

Common Language Description

The procedure described by CPT® Code 0626T involves the automated quantification and characterization of coronary atherosclerotic plaque, which is critical for assessing the severity of coronary artery disease. Atherosclerotic plaque refers to the buildup of various substances within the arterial walls, leading to the thickening of the vessel intima as lesions develop. These lesions can consist of a mixture of blood cells, macrophages, lipids, smooth muscle cells, necrotic cellular debris, collagen, and calcium. The composition of these plaques can vary significantly, and understanding this variability is essential for predicting the risk of plaque rupture and subsequent ischemic events, such as strokes. The quantification and characterization process focuses on key features of the plaque, including the extent of calcification and the presence of a necrotic core, as well as differentiating between lipid-rich and fibrous lesions. Such detailed analysis provides a more comprehensive risk assessment than merely measuring the size and margins of the lesions. The evaluation of plaque and disease severity is performed using advanced imaging techniques, specifically through data obtained from coronary computed tomographic angiography (CTA). The procedure utilizes sophisticated software from various vendors that automatically segments the vessel margins and differentiates the plaque components based on varying attenuation thresholds. This software also generates color maps to visually represent the different components of the plaque. Additionally, automated quantitative histogram analysis of plaque attenuation values enhances the characterization of the plaque. This automated approach is notably more efficient than manual methods and is particularly effective for vessels larger than 2mm in diameter. The process culminates in a comprehensive report that reconciles any discordant data from the computerized analysis, providing a clear interpretation of the findings.

1. Indications

The procedure associated with CPT® Code 0626T is indicated for the assessment of coronary artery disease severity through the analysis of coronary atherosclerotic plaque. The specific indications for this procedure include:

Coronary Artery Disease (CAD) - Patients with suspected or known CAD may require detailed evaluation of plaque characteristics to assess the risk of adverse cardiovascular events.
Assessment of Plaque Composition - The procedure is indicated for patients where understanding the composition of atherosclerotic plaques (e.g., calcified vs. lipid-rich) is essential for risk stratification.
Evaluation of Plaque Stability - Patients with a history of ischemic events or those at high risk for plaque rupture may benefit from this analysis to determine the stability of their plaques.

2. Procedure

The procedure for CPT® Code 0626T involves several key steps that ensure a thorough evaluation of coronary atherosclerotic plaque:

Step 1: Data Acquisition - The process begins with the acquisition of data from a coronary computed tomographic angiography (CTA) study. This imaging technique provides detailed visualization of the coronary arteries and any existing plaques.
Step 2: Automated Analysis - Following data acquisition, specialized software is employed to perform an automated analysis of the coronary CTA images. This software segments the vessel margins and differentiates the various components of the plaque based on their attenuation properties.
Step 3: Quantification and Characterization - The software quantifies the extent of calcification and characterizes the plaque components, identifying features such as the presence of a necrotic core and distinguishing between lipid-rich and fibrous lesions. This step is crucial for understanding the potential risks associated with the plaques.
Step 4: Histogram Analysis - An automated quantitative histogram analysis is conducted to evaluate plaque attenuation values in increments. This analysis enhances the characterization of the plaque and provides additional data for interpretation.
Step 5: Review and Reconciliation - The output from the computerized analysis is reviewed to reconcile any discordant data. This step ensures that any discrepancies in the analysis are addressed, leading to a more accurate interpretation.
Step 6: Reporting - Finally, a comprehensive report is prepared that includes the interpretation of the findings from the automated analysis. This report serves as a critical document for clinicians to make informed decisions regarding patient management.

3. Post-Procedure

Post-procedure care following the analysis associated with CPT® Code 0626T typically involves monitoring the patient for any immediate reactions to the imaging procedure. Patients may be advised to follow up with their healthcare provider to discuss the results of the report and any necessary next steps in their treatment plan. It is essential for clinicians to integrate the findings from the report into the overall management strategy for the patient, particularly in cases where significant coronary artery disease is identified. Additionally, ongoing monitoring and potential lifestyle modifications or medical interventions may be recommended based on the severity of the findings.

Short Descr	AUTO QUAN C PLAQ I&R
Medium Descr	AUTO QUAN&CHARAC CORONARY PLAQ REV CPTR ALYS I&R
Long Descr	Automated quantification and characterization of coronary atherosclerotic plaque to assess severity of coronary disease, using data from coronary computed tomographic angiography; review of computerized analysis output to reconcile discordant data, interpretation and report
Status Code	Carriers Price the Code
Global Days	XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC)	2 - Professional Component Only 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)	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	Items and Services Not Billable to the MAC
Berenson-Eggers TOS (BETOS)	none
MUE	1

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.
XE	Separate encounter, a service that is distinct because it occurred during a separate encounter
XP	Separate practitioner, a service that is distinct because it was performed by a different practitioner