Summary & Overview
CPT 81595: Molecular PCR Test and Algorithmic Heart Transplant Rejection Risk
CPT code 81595 captures a specialized molecular diagnostic service that quantifies expression of 20 genes from a peripheral blood subfraction using real-time quantitative PCR and applies an algorithmic analysis to generate a rejection risk score for patients being evaluated for heart transplantation. This code matters nationally because it supports clinical decision-making for transplant eligibility and post-transplant management, linking advanced molecular diagnostics with algorithm-driven risk stratification.
Key payers in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of the code’s clinical purpose, typical care settings, and the payer landscape addressed. The publication summarizes expected service lines, where the test is commonly performed, and what stakeholders should know about coverage context and clinical implications.
The report provides benchmarks and policy context relevant to laboratory-directed molecular diagnostics and algorithmic reporting, discusses reimbursement and coding considerations for this type of high-complexity molecular assay, and outlines clinical context for transplant teams and laboratory services. Data not available in the input where specific payer policies, fee schedules, or associated taxonomies and ICD-10 codes would normally be detailed.
Billing Code Overview
CPT code 81595 describes a laboratory service in which a lab analyst performs real-time quantitative polymerase chain reaction (PCR) testing on a subfraction of peripheral blood, measuring expression across 20 genes, and combines those laboratory results with patient data in an algorithmic analysis to report a rejection risk score for a potential heart transplant recipient.
Service type: Molecular diagnostic testing with algorithmic risk score generation
Typical site of service: Clinical laboratory or specialized molecular diagnostics laboratory
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 58-year-old male with a history of non-ischemic cardiomyopathy and progressive heart failure is being evaluated for heart transplantation. The transplant cardiology team orders a peripheral blood gene-expression assay to assess the patient’s immunologic risk of graft rejection and to inform listing and perioperative immunosuppression planning. A phlebotomist collects a venous blood sample in the outpatient transplant clinic. The specimen is sent to a clinical molecular laboratory where a lab analyst performs real-time quantitative polymerase chain reaction (PCR) on a 20-gene panel from a peripheral blood subfraction. The laboratory applies an algorithm that integrates the test results with relevant patient data to generate and report a numerical rejection risk score. The lab issues the finalized report to the transplant program electronically; the transplant cardiologist and transplant surgeon review the score as part of the pre-transplant evaluation or post-transplant surveillance workflow. Typical site of service is an outpatient transplant clinic or a reference molecular pathology laboratory with reporting back to the transplant center. Typical service type is a molecular diagnostic lab test with an analytical and interpretive algorithmic component documented in the report.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | When billing only the physician or laboratory professional interpretation component separate from technical processing. |