Summary & Overview

CPT 36516: Therapeutic Apheresis with Extracorporeal Plasma Treatment

CPT code 36516 denotes therapeutic apheresis involving extracorporeal treatment of blood to remove immune complexes or selectively filter blood components with return of plasma to the patient. This procedure is clinically important for conditions requiring removal of pathogenic plasma constituents and is performed using specialized apheresis equipment in outpatient or hospital-based settings. Nationally, accurate coding of this service affects clinical documentation, utilization tracking, and payer coverage decisions for high-cost, resource-intensive therapies.

Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical service represented by the code, typical sites of service, and which major payers are relevant to coverage and payment discussions. The publication also summarizes common modifiers and administrative considerations when billing for extracorporeal therapeutic apheresis, and provides context for benchmarking and policy review. The report is intended to inform coding, billing, and policy stakeholders about how CPT code 36516 is used in clinical practice and payer settings across the United States.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicare36516CPTtherapeutic apheresisaphresisextracorporeal blood treatmentplasma filtrationoutpatient apheresis

Billing Code Overview

CPT code 36516 reports therapeutic apheresis with extracorporeal treatment of blood for removal of immune complexes or selective filtration of blood components with return of plasma to the patient. The procedure uses specialized apheresis equipment to separate and remove targeted constituents (for example, immune complexes or specific plasma components) and retransfuse the remainder.

Service type: Therapeutic apheresis with extracorporeal blood treatment.

Typical site of service: Hospital outpatient department, specialty infusion or apheresis center, or ambulatory surgical center where extracorporeal blood treatment is performed.

Data not available in the input for associated taxonomies, specific ICD-10 diagnoses, and related codes.

Clinical & Coding Specifications

Clinical Context

A 45-year-old patient with chronic inflammatory demyelinating polyneuropathy (CIDP) presents with progressive motor weakness and sensory loss despite optimized immunosuppressive therapy. The neurology team orders therapeutic apheresis (plasmapheresis) to remove pathogenic autoantibodies and immune complexes. The procedure is scheduled in an outpatient infusion center staffed by an apheresis-trained nurse, a supervising physician (hematology or neurology), and access to vascular specialists for central venous catheter placement if peripheral access is inadequate. Pre-procedure steps include consent, review of coagulation status, baseline vital signs, and laboratory tests (CBC, electrolytes, calcium, coagulation panel). Vascular access is obtained via peripheral venous catheters or a tunneled central venous catheter if required. During the session, extracorporeal circulation passes blood through a filtration/separation device to remove plasma or targeted components; replacement fluid (albumin or plasma) is administered based on the prescription. The patient is monitored for hemodynamic changes, citrate reactions, allergic reactions, and bleeding. Post-procedure documentation includes start/stop times, volumes processed and exchanged, replacement fluids used, patient tolerance, and any complications. Subsequent sessions are scheduled per disease protocol, and coordination with neurology/hematology documents therapeutic response and ongoing need for apheresis.

Coding Specifications

Modifier	Description	When to Use
`26`	Professional component

Taxonomy Code	Specialty	Notes
207RH0000X	Hematology	Hematologists commonly order and supervise therapeutic apheresis for hematologic and immunologic indications.
2084P0200X	Neurology	Neurologists frequently manage patients with autoimmune neuropathies who receive plasmapheresis.
207K00000X	Internal Medicine	Hospitalists and internists coordinate medical management and admit patients for inpatient apheresis.
363LA2200X	Vascular Access/Interventional Radiology	Specialists who place tunneled or temporary central venous catheters for repeated apheresis access.
363LP0200X	Apheresis/Phlebotomy Specialist	Nursing or clinical specialties focused on performing apheresis procedures and device operation.

ICD-10 Code	Description	Clinical Relevance
`C80.1`	Data not available in the input.	Data not available in the input.
`G61.81`	Chronic inflammatory demyelinating polyneuropathy	Common neurologic indication for therapeutic plasmapheresis to remove pathogenic antibodies.
`M35.0`	Data not available in the input.	Data not available in the input.
`D69.5`	Data not available in the input.	Data not available in the input.
`T80.6`	Data not available in the input.	Data not available in the input.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`36516`	Apheresis, therapeutic, with extracorporeal treatment of the blood, including all processing and reinfusion when performed; plasmapheresis or pheresis	Primary code for therapeutic apheresis where blood is treated extracorporeally to remove immune complexes or specific components.
`36556`	Introduction of needle and/or catheter into central vein; for therapeutic apheresis vascular access if a tunneled central venous catheter is placed, use appropriate central line placement codes (see interventional radiology or surgery codes).	Performed when central venous access is required for apheresis sessions (vascular access placement precedes `36516`).
`36561`	Insertion of non-tunneled centrally inserted central venous catheter, age 5 years or older	Used when a non-tunneled central venous catheter is placed for apheresis when peripheral access is inadequate.
`96360`	Intravenous infusion, hydration; initial, 31 minutes to 1 hour	Used when IV fluids are administered as part of replacement therapy or supportive care during the apheresis encounter.
`99070`	Supplies and materials (e.g., sterile trays, apheresis kits), used during apheresis	Billed by some facilities to capture additional supplies not included in the primary procedure billing.

Note: The input provided only included 36516 as the primary CPT code. Additional codes listed above are commonly associated with vascular access, infusion support, and supply billing in the clinical workflow of therapeutic apheresis.

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