CPT® Code 81426

Add-On Code

Genome (eg, unexplained constitutional or heritable disorder or syndrome); sequence analysis, each comparator genome (eg, parents, siblings) (List separately in addition to code for primary procedure)

Molecular genetic testing, specifically genome sequencing, involves a comprehensive analysis of both coding and non-coding regions of DNA to identify genetic disorders. This testing is particularly valuable for patients exhibiting unexplained constitutional or heritable disorders or syndromes. The process utilizes advanced techniques such as next-generation sequencing (NGS) to analyze the genome at a deep level, allowing for the detection of rare genetic conditions that may not be evident through standard testing methods. Whole genome sequencing (WGS) serves as a cost-effective approach for diagnosing unusual symptoms in patients and for assessing carrier status in healthy individuals who may be at risk for familial diseases. Additionally, it can help identify predispositions to adult-onset medical conditions. The procedure begins with the collection of a blood sample through a venipuncture, which is essential for obtaining the DNA necessary for analysis. The results of this testing can provide critical insights into genetic conditions, guiding further medical management and family planning. The CPT® code 81426 specifically pertains to the sequence analysis of a comparator genome, such as that of a parent or sibling, and is reported separately in conjunction with the primary procedure code for the patient's genome analysis.