Summary & Overview
CPT 36513: Platelet Apheresis (Therapeutic Pheresis)
CPT code 36513 represents therapeutic platelet apheresis, a procedure that selectively removes platelets from a patient’s blood and returns the remaining components. This service is clinically important for management of disorders where platelet reduction is required, including certain thrombotic, hematologic, and immune-mediated conditions. Nationally, plateletpheresis is performed in hospital outpatient departments, inpatient settings, and dedicated apheresis centers where specialized machines and trained staff are available.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for platelet apheresis, typical sites of service, and commonly reported billing modifiers. The publication summarizes reimbursement benchmarks and coverage considerations among major national payers, highlights relevant coding practice for reporting CPT code 36513, and notes areas where policy updates or payer variations commonly affect claims processing. Clinical teams, billing professionals, and policy analysts will gain practical insight into how this procedure is described in claims, typical service settings, and the payer landscape relevant to national reimbursement and coverage practice.
Billing Code Overview
CPT code 36513 describes apheresis for removal of platelets, a therapeutic blood separation procedure in which platelets are selectively removed from whole blood and the remaining components are retransfused to the patient. The procedure is commonly used to treat conditions where reduction of circulating platelets is clinically indicated.
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Service type: Therapeutic apheresis (plateletpheresis)
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Typical site of service: Hospital outpatient departments, specialized apheresis centers, and inpatient hospital settings where apheresis equipment and trained personnel are available.
Clinical & Coding Specifications
Clinical Context
A typical patient is an adult with a hematologic disorder such as immune thrombocytopenia (ITP) or thrombocytosis who requires therapeutic platelet apheresis to rapidly reduce circulating platelet count. The patient arrives to an outpatient ambulatory apheresis suite, hospital transfusion service, or inpatient hematology unit. Pre-procedure steps include verification of indications and consent, review of recent platelet counts and coagulation studies, establishment of vascular access (typically a central venous catheter or peripheral large-bore venous access), and baseline vital signs. The apheresis nurse and physician review anticoagulation needs and replacement fluids. During the procedure, specialized apheresis equipment separates and removes platelets while returning the remaining cellular components and plasma to the patient. Monitoring includes continuous vital signs, anticoagulation effects, calcium levels if citrate is used, and access site status. Post-procedure documentation records the number of platelets removed, procedure duration, any complications, and post-procedure platelet count. Typical sites of service are hospital inpatient units, hospital outpatient departments, and freestanding apheresis centers.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | Default/neutral code (institutional use) | Use per payer/system when a specific modifier is not required and institutionally designated. |