Summary & Overview
CPT 36596: Mechanical Removal of Obstruction from Central Venous Device
CPT code 36596 denotes a mechanical intervention to remove obstructive material from the lumen of an implanted central venous access device by introducing instruments such as wires or balloon catheters through the device's external port. This code represents a targeted procedural service to restore device patency and can be performed in outpatient procedure suites, interventional radiology settings, or inpatient units when clinically indicated. Nationally, procedures to manage central venous device occlusion are important for maintaining continuity of care for patients requiring long-term vascular access for therapies such as chemotherapy, parenteral nutrition, or long-term antibiotics.
Key payers in this overview include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the code's clinical context and typical settings of service, plus what to expect in benchmarking and policy content: reimbursement benchmarks, common billing considerations, and any relevant policy or coverage updates that affect payment and utilization. The publication also outlines clinical indications tied to central venous device obstruction and situational factors that influence site-of-service decisions. Data not available in the input will be noted where applicable.
Billing Code Overview
CPT code 36596 describes a procedure in which the provider inserts a wire, balloon catheter, or other instruments through the external opening into the lumen of a central venous device to push or pull out obstructive material. This is an intervention on an implanted central venous access device intended to restore or maintain device patency.
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Service type: Device-directed thrombus or obstruction removal (mechanical declotting) of a central venous access device
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Typical site of service: Procedural settings where central venous devices are accessed, commonly in outpatient procedure suites, interventional radiology suites, or hospital inpatient units depending on clinical context and patient status.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with an implanted central venous access device (port or tunneled catheter) presenting with catheter malfunction due to intraluminal thrombosis, fibrin sheath formation, or catheter-related occlusion. The patient may report difficulty with infusion or inability to aspirate blood; nursing attempts at flushing or tissue plasminogen activator (tPA) instillation have failed. The procedure is performed by an interventional radiologist, vascular surgeon, or interventional cardiologist in an outpatient interventional radiology suite, ambulatory surgery center, or hospital procedure room. Under sterile conditions and local anesthesia with conscious sedation as needed, the provider accesses the device hub, inserts a guide wire, balloon catheter, or mechanical device through the device lumen, and disrupts or extracts obstructive material. Post-procedure assessment includes verification of restored device patency with aspiration/flush and possibly contrast injection, observation for bleeding or air embolus, and documentation of device function prior to discharge.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier (default) | Use when no special conditions apply and standard billing is appropriate |
11 |