Summary & Overview
CPT 96523: Irrigation/Flush of Venous Access Device
CPT code 96523 represents the irrigation or flushing of a venous access device to maintain patency for drug administration. This routine maintenance procedure supports safe intravenous therapy by removing clots or blockages and ensuring the device remains functional. Nationally, the code is relevant across outpatient and ambulatory settings where infusion and intravenous drug administration occur.
Key payers addressed include Aetna, Blue Cross Blue Shield, Cigna, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context, common sites of service, and payment considerations for this service. The publication outlines benchmarking expectations, coding and billing context for outpatient infusion-related services, and highlights policy or coverage items commonly applied by major payers.
This summary prepares clinicians, billing professionals, and policy analysts to understand when CPT code 96523 is used, where the service typically occurs, and what types of payer guidance and benchmarks are most relevant. Data not available in the input is clearly noted in the detailed sections that follow.
Billing Code Overview
CPT code 96523 describes the provider irrigating or flushing a venous access device used to administer drugs to the patient. This service involves clearing or maintaining patency of an existing venous catheter or port to ensure safe and effective medication delivery.
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Service type: Catheter maintenance/irrigation procedure
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Typical site of service: Ambulatory infusion centers, outpatient clinics, physician offices, and hospital outpatient departments
Clinical & Coding Specifications
Clinical Context
A patient with an established implanted venous access device (for example a port-a-cath or tunneled central venous catheter) presents to an infusion clinic for routine maintenance or between-treatment care. The patient may be receiving chemotherapy, total parenteral nutrition, long-term antibiotics, or intermittent outpatient infusions. The provider assesses catheter patency, uses aseptic technique, accesses the hub with a sterile needle or syringe, and irrigates/flushed the device with normal saline and heparin lock solution as indicated. The procedure is commonly performed in an outpatient infusion center, oncology clinic, ambulatory surgical center, emergency department, or inpatient bedside when maintaining device function or preparing the line for subsequent medication administration. Typical workflow steps: review indication and prior imaging, explain procedure and obtain verbal consent, don sterile gloves and prepare supplies, access device, aspirate to confirm blood return if applicable, irrigate/flush to maintain patency, document volume and solution type, and schedule follow-up or next infusion as needed.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure | Use when a distinct E/M visit is provided on the same day as the flush that is above and beyond the usual pre- and post-procedure care. |