Summary & Overview
CPT 36591: Blood Specimen Collection from Implantable Venous Access Device
CPT code 36591 identifies collection of a blood specimen from a completely implantable venous access device that the same provider placed in a prior procedure. The service is commonly used when patients have long-term implanted ports for chemotherapy, long-term antibiotics, or frequent laboratory monitoring. Nationally, this code captures an important, low-complexity outpatient procedure tied to chronic and cancer care pathways where reliable vascular access is required.
Key payers covered in this review include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. The analysis addresses how these payers typically classify and reimburse port-access specimen collection, common service settings, and billing considerations relevant to institutional and professional claims.
Readers will learn the clinical context for use of CPT code 36591, expectations for typical sites of service (ambulatory surgical centers, hospital outpatient departments, and physician offices), and the operational relevance for practices managing implanted venous access devices. The publication also summarizes available benchmarks and recent policy updates where applicable, and highlights documentation elements and coding scenarios that commonly affect claim adjudication. Data not available in the input is noted where specific payer rates, taxonomies, or ICD-10 pairings are not provided.
Billing Code Overview
CPT code 36591 describes collection of a blood specimen from a completely implantable venous access device that the provider previously placed. This represents a specimen collection procedure performed through an implanted port or reservoir system.
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Service type: Specimen collection via an implanted venous access device
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Typical site of service: Ambulatory surgical center, hospital outpatient department, physician office, or other outpatient settings where the implantable venous access device is accessed for blood draw
Clinical & Coding Specifications
Clinical Context
A 58-year-old oncology patient with a previously implanted totally implantable venous access device (port) presents to the outpatient infusion clinic for routine bloodwork prior to chemotherapy. The patient arrived with an established port placed several months earlier by the same provider and scheduled for laboratory monitoring and medication administration. The provider prepares the sterile field, accesses the port using a non-coring needle, withdraws an appropriate volume of blood for required tests, labels specimens, and flushes the device per institutional protocol. If blood collection is complete without complication, the port is dressed and the visit is documented noting the device identifier, needle size, number of attempts, and any patient symptoms. Typical site of service is an outpatient infusion center, physician office, or ambulatory surgical center. Service type is a minor procedure (injection/venous access service) performed by the provider who implanted the device in a prior encounter.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Standard primary modifier (no modifier) | Use when no additional modifier applies and billing as usual |
11 | Office or Other Outpatient E/M services by the submitting physician |