Summary & Overview
CPT 86832: HLA Class I Antibody Solid Phase Immunoassay
CPT code 86832 represents a high-definition solid phase immunoassay performed on patient serum to detect antibodies against Class I human leukocyte antigens (HLA). This specialized laboratory test plays a critical role in transplant medicine and immunology by identifying HLA sensitization that can affect donor-recipient compatibility and post-transplant outcomes. Nationally, accurate HLA antibody identification supports organ allocation decisions and patient management across transplant centers and reference laboratories. Key payers addressed in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will gain a concise understanding of what CPT code 86832 covers clinically, where the service is typically performed, and the contexts in which it is applied. The publication provides benchmarks and practical context for billing and coding practices, outlines common payer coverage considerations, and summarizes clinical relevance for transplant and immunology workflows. Data not available in the input for specific reimbursement rates, payer-specific policy details, associated taxonomies, and ICD-10 pairings are noted where applicable.
Billing Code Overview
CPT code 86832 describes a solid phase immunoassay performed on patient serum to detect specific antibodies to Class I human leukocyte antigens (HLA) using a high-definition method, such as testing for one antigen per bead. This assay is used to identify HLA Class I sensitization in patients, typically as part of transplant evaluation, donor-recipient compatibility testing, or immunology laboratory work.
Service Type: Immunohematology / HLA antibody testing
Typical Site of Service: Clinical laboratory or hospital laboratory
Clinical & Coding Specifications
Clinical Context
A 45-year-old woman with end-stage renal disease is evaluated prior to kidney transplantation. The transplant team orders testing to detect recipient anti–HLA Class I antibodies against potential donor antigens. Blood is drawn in the outpatient phlebotomy area and serum is sent to the immunology laboratory. A lab analyst performs a solid-phase, single-antigen bead immunoassay (86832) using patient serum to identify antibodies to specific Class I human leukocyte antigens (HLA-A, HLA-B, HLA-C). Results are reviewed by the histocompatibility specialist and incorporated into the crossmatch and donor selection workflow. The typical site of service is an outpatient hospital laboratory or freestanding reference immunology lab that supports transplant services. Turnaround time is usually 24–72 hours depending on batching and confirmatory testing.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing split technical/professional components separately and the lab provides interpretive physician services. |
TC | Technical component |