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HCPCS P2028: Cephalin Flocculation, Blood
HCPCS Level II code P2028 denotes cephalin flocculation testing on blood, a specialized serologic assay used in clinical laboratories to evaluate clotting function. Nationally, accurate coding for laboratory tests like P2028 supports clinical decision-making, quality measurement, and appropriate claims processing across public and commercial payers. Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find a concise overview of the clinical purpose of the test, typical site of service, and the payer landscape relevant to reimbursement and coverage. The publication summarizes coding context, common modifiers and procedural considerations when present, and highlights where input data is not available. It provides benchmarks and policy notes that affect billing consistency and claim adjudication for laboratory services, plus clinical context explaining when cephalin flocculation testing is ordered. This is intended for billing professionals, laboratory administrators, and policy analysts seeking a national-level briefing on how P2028 is represented in claims and coverage discussions.
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Billing Code Overview
HCPCS Level II code P2028 represents cephalin flocculation, blood, a laboratory serologic test that assesses clotting factor activity by observing flocculation in cephalin-based reagents. The service type is a diagnostic laboratory test, typically performed as a clinical pathology/laboratory service. The typical site of service is a clinical laboratory or hospital laboratory setting.
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