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CPT 86850: RBC Antibody Screen, Non-A/B Antigens
CPT code 86850 represents a serologic screening test performed on patient blood to detect antibodies to red blood cell (RBC) antigens other than A and B. This test is a routine component of pre-transfusion evaluation, antenatal screening, and investigation of hemolytic anemia, and it has national relevance for transfusion safety and laboratory workflows. Key payers included in this analysis are Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
Readers will find an overview of the clinical purpose of the test, typical sites of service, and the common clinical indications that prompt ordering. The publication summarizes payer coverage patterns and comparative notes across listed payers, highlights how 86850 interfaces with related laboratory codes such as blood typing and compatibility testing, and outlines common billing considerations and service-line placement for laboratories and hospital transfusion services. Policy and coding updates that affect laboratory reporting and billing practices are summarized, along with implications for claims processing and utilization oversight. The content is designed to inform laboratory managers, billing specialists, and clinicians about the clinical role and billing context of CPT code 86850 on a national level.
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Billing Code Overview
CPT code 86850 describes a laboratory screening test for unexpected red blood cell (RBC) antibodies. The procedure uses patient blood to detect antibodies directed against RBC antigens other than the A and B blood group antigens. This screening identifies clinically significant alloantibodies and autoantibodies that can affect transfusion compatibility and patient management.
Service type: Laboratory serologic screening
Typical site of service: Clinical laboratory or hospital laboratory setting, including transfusion service laboratories where pre-transfusion testing is performed.
National Reimbursement Benchmarks
Commercial reimbursement for CPT 86850 centers on BUCA as the average commercial benchmark at $21.9, with payer-specific distributions showing meaningful variation. Blue Cross Blue Shield (BCBS) and Aetna demonstrate higher median and mean positions versus Cigna and UnitedHealth Group: BCBS mean is $30.7 with median $29.6, Aetna mean $11.3 with median $8, Cigna mean $10.2 median $8.7, and UnitedHealth Group mean $8.7 median $5.9. BUCA’s average sits between the higher BCBS cluster and the lower UnitedHealth Group/Cigna cluster, offering a mid-market reference at $21.9.
Dispersion (P75 minus P25) highlights differences in rate concentration across payers: Blue Cross Blue Shield has a spread of $13.5 ($37.8 - $22.5), the widest among listed payers; Aetna’s spread is $7.4 ($13.4 - $6.0); Cigna’s spread is $7.9 ($12.9 - $5.0); UnitedHealth Group is the tightest with a spread of $5.8 ($9.9 - $4.1). These ranges indicate BCBS has the greatest variability while UnitedHealth Group shows the most compressed commercial rates around its central tendency.