Summary & Overview
HCPCS P9019: Platelets, Each Unit
HCPCS Level II code P9019 designates a single unit of platelets for transfusion. Platelet transfusions are a critical component of hematology, oncology, trauma care, and perioperative management, making this code relevant across acute care settings nationwide. Accurate coding for platelet units affects clinical workflows, inventory management, and payer adjudication for blood products.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of common payer considerations, typical sites of service where P9019 is billed, and the clinical contexts in which platelet units are used. The publication summarizes benchmarks for utilization where available, highlights policy and coverage considerations that influence billing and reimbursement, and clarifies documentation elements that commonly appear in claims for blood product supply.
This summary is intended for billing managers, revenue cycle professionals, and clinical staff involved in transfusion services who need a concise reference to the purpose and billing context of HCPCS Level II code P9019. Data not available in the input is noted where applicable.
Billing Code Overview
HCPCS Level II code P9019 represents Platelets, each unit. This code denotes the supply of a single unit of platelet blood product used for transfusion.
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Service type: Blood product supply and transfusion support
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Typical site of service: Hospital inpatient, hospital outpatient, and transfusion centers
Clinical & Coding Specifications
Clinical Context
A patient with thrombocytopenia or active bleeding requires transfusion of platelet units. Typical scenario: a 64-year-old patient with acute myeloid leukemia hospitalized for chemotherapy develops platelet count <10,000/µL and petechiae, or a surgical patient with intraoperative bleeding and platelet dysfunction. The transfusion workflow includes crossmatching and blood bank verification, ordering of P9019 per unit of donated platelets, bedside pre-transfusion identity and compatibility checks, administration via intravenous line over 30–60 minutes per unit with vital sign monitoring, and post-transfusion reassessment for efficacy (rise in platelet count) and adverse reactions. Documentation includes indication, informed consent, unit lot numbers, start/stop times, pre- and post-transfusion vital signs and platelet counts, and any transfusion reactions reported to the blood bank and documented in the medical record. Typical site of service is inpatient hospital or ambulatory infusion center; service type is blood product transfusion — platelet units billed per unit using P9019.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
00 | No modifier (default) | Use when no special circumstance modifier applies to the platelet unit billing. |