Summary & Overview
CPT 75898: Follow-Up Angiography via Existing Indwelling Catheter
CPT code 75898 denotes a follow-up angiographic study using an existing indwelling catheter placed during prior therapy, embolization, or infusion, excluding thrombolytic procedures. This code captures diagnostic vascular imaging performed through a catheter already in place and is relevant for post-procedural assessment, monitoring of embolization or infusion therapy, and evaluating vessel patency. Nationally, accurate use of 75898 affects documentation, clinical continuity, and appropriate billing for catheter-based follow-up imaging.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a focused overview of the clinical context for using this code, common billing considerations, and typical sites of service where the procedure occurs. The publication outlines benchmarking and reimbursement context where available, clarifies service classification for coding compliance, and summarizes policy or payer notes relevant to outpatient interventional radiology and hospital-based follow-up angiography.
This resource is designed for coders, billing managers, and clinicians who need concise guidance on when CPT code 75898 applies, how it is used in clinical workflow, and what to consider for payer submission and documentation in a national context.
Billing Code Overview
CPT code 75898 describes a follow-up angiographic study performed through an existing indwelling catheter placed during prior therapy, embolization, or infusion, excluding procedures for thrombolysis. The service involves imaging of blood vessels (angiography) using the catheter already present in the vessel to evaluate treatment effect, vessel patency, or procedural outcomes.
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Service type: Follow-up diagnostic angiography via indwelling catheter
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Typical site of service: Hospital outpatient department, outpatient interventional radiology suite, or ambulatory surgery center where catheter-based vascular imaging is performed using an existing catheter
Clinical & Coding Specifications
Clinical Context
A 62-year-old patient with a history of hepatic tumor treated two weeks earlier with transarterial chemoembolization returns for routine follow-up. The existing arterial catheter placed during the prior embolization remains in situ. The interventional radiology team performs catheter-based angiography through the indwelling catheter to evaluate residual tumor vascularity and confirm the absence of non-target perfusion. The workflow includes verification of catheter patency, contrast injection under fluoroscopy, acquisition of digital subtraction angiographic runs, image interpretation by the attending interventional radiologist, and documentation of findings and any immediate management decisions. The procedure is performed in an angiography suite or interventional radiology department under conscious sedation or monitored anesthesia care depending on patient status.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when reporting only the physician interpretation when the technical service is billed separately. |
TC | Technical component | Use when reporting only the technical service (equipment, technologist) without physician interpretation. |