Summary & Overview
CPT 81468: High-Resolution HLA Class I & II Typing, DNA Analysis
CPT code 81468 is a laboratory procedure for high-resolution Human Leukocyte Antigen (HLA) Class I and II typing, performed via DNA analysis for each locus. This advanced testing is crucial for organ and tissue transplantation, ensuring optimal donor-recipient compatibility and reducing the risk of rejection. Nationally, HLA typing is a cornerstone in transplant medicine, supporting clinical decisions for kidney, heart, lung, liver, and other transplants.
This publication provides a comprehensive overview of CPT code 81468, including its clinical significance, laboratory service context, and typical site of service. Readers will gain insights into payer coverage, with a focus on Blue Cross Blue Shield, and understand how this code fits within broader laboratory and pathology billing practices. The summary also highlights related codes for HLA typing at different resolution levels and unlisted molecular pathology procedures, offering context for coding and reimbursement.
Key benchmarks, policy updates, and clinical applications are discussed to inform stakeholders about current trends and requirements in HLA typing. The publication is designed for healthcare professionals, laboratory administrators, and policy analysts seeking clarity on coding, coverage, and the evolving landscape of transplant-related laboratory services.
CPT Code Overview
CPT code 81468 represents high-resolution typing of Human Leukocyte Antigen (HLA) Class I and II alleles, such as HLA-A, -B, -C, -DRB1, and -DQB1, using DNA analysis for each locus. This laboratory service is essential for determining precise HLA compatibility, which plays a critical role in organ and tissue transplantation. The typical site of service for this procedure is an independent laboratory, designated as Place of Service 81. High-resolution HLA typing provides detailed genetic information that supports clinical decision-making in transplant medicine and immunology.
Clinical & Coding Specifications
Clinical Context
A patient with a history of organ transplantation, such as kidney, heart, lung, or liver, is being evaluated for ongoing transplant management or potential re-transplantation. The clinical workflow involves ordering high-resolution HLA Class I and II typing to determine compatibility between the patient and a potential donor. The laboratory receives a blood sample, performs DNA-based testing to identify specific HLA alleles at loci such as HLA-A, HLA-B, HLA-C, HLA-DRB1, and HLA-DQB1. Results are used by the clinical team to assess immunologic risk and guide transplant decisions. This service is typically performed in an independent laboratory setting (Place of Service 81).
Coding Specifications
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Modifier
26: Indicates the professional component of the laboratory service, typically used when a physician interprets the results but does not perform the technical work. -
Modifier
TC: Indicates the technical component, used when the laboratory performs the actual testing but does not interpret the results.
| Taxonomy Code | Specialty Name |
|---|---|
207ZP0102X | Pathology |
207Q00000X | Family Medicine |
207R00000X | Internal Medicine |
207V00000X | Obstetrics & Gynecology |
207ZB0001X | Clinical Pathology/Laboratory Medicine |
Related Diagnoses
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Z94.0- Kidney transplant status- Indicates a patient has received a kidney transplant; HLA typing is relevant for monitoring or re-transplantation.
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Z94.1- Heart transplant status- Used for patients with a heart transplant; HLA typing assists in donor matching and post-transplant care.
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Z94.2- Lung transplant status- Applies to lung transplant recipients; HLA typing is important for compatibility and immunologic monitoring.
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Z94.3- Heart and lungs transplant status- For patients with both heart and lung transplants; HLA typing is critical for complex donor-recipient matching.
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Z94.4- Liver transplant status- Indicates liver transplant recipients; HLA typing may be used for donor selection and post-transplant management.
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Z94.5- Skin transplant status- Used for patients with skin transplants; HLA typing can help assess immunologic risk.
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Z94.6- Bone transplant status- For bone transplant recipients; HLA typing is relevant for compatibility assessment.
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Z94.7- Corneal transplant status- Indicates corneal transplant recipients; HLA typing may be used for donor matching and monitoring.
Related CPT Codes
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81370- HLA Class I typing, low resolution- Used for initial, less detailed HLA typing. May precede high-resolution testing or be used when only broad compatibility is needed.
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81371- HLA Class II typing, low resolution- Similar to
81370, but for Class II antigens. Used for basic compatibility assessment.
- Similar to
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81372- HLA Class I typing, high resolution- Provides detailed allele-level typing for Class I antigens. May be used alongside
81468for specific loci.
- Provides detailed allele-level typing for Class I antigens. May be used alongside
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81373- HLA Class II typing, high resolution- High-resolution typing for Class II antigens. Often paired with
81468for comprehensive analysis.
- High-resolution typing for Class II antigens. Often paired with
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81479- Unlisted molecular pathology procedure- Used when a molecular pathology test does not have a specific CPT code. May be used as an alternative if the procedure falls outside the defined scope of
81468.
- Used when a molecular pathology test does not have a specific CPT code. May be used as an alternative if the procedure falls outside the defined scope of
National Reimbursement Benchmarks
For CPT code 81468, the national mean rate for Blue Cross Blue Shield and BUCA (average commercial) is $80.02. No Medicare benchmark data is available for this code. The mean rates for both commercial payers are identical, indicating uniformity in national pricing.
Rate dispersion is minimal across both Blue Cross Blue Shield and BUCA, with the 25th, 50th, and 75th percentiles all at $80.00. This suggests a very tight distribution, with no significant variation in rates among providers nationally for these payers.
The table and chart below present the full breakdown of national benchmarks for CPT code 81468 by payer.
Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.