CPT® Code 81417

Exome (eg, unexplained constitutional or heritable disorder or syndrome); re-evaluation of previously obtained exome sequence (eg, updated knowledge or unrelated condition/syndrome)

The CPT® Code 81417 pertains to the re-evaluation of previously obtained exome sequencing, which is a specialized form of molecular genetic testing. This testing focuses on the exome, the portion of the genome that contains the sequences of protein-coding DNA, which are crucial for understanding genetic disorders. Exome sequencing is particularly valuable in cases where patients present with multiple anomalies and a genetic disorder is suspected but not yet identified. By analyzing the exome, healthcare professionals can identify disease-causing genetic variants and gene targets that may be responsible for the patient's condition. This method is cost-effective and allows for the examination of approximately 180,000 exomes, covering about 85% of mutations that lead to heritable diseases. The testing process involves obtaining a blood sample through a separate venipuncture procedure, which is then analyzed using Next Generation Sequencing (NGS) technology. This advanced technique enables the detection of various genomic variants, including single nucleotide variants (SNVs), small DNA insertions or deletions (indels), copy number variants (CNVs), and other structural variants (SVs). The re-evaluation indicated by code 81417 is particularly relevant when there is updated knowledge regarding genetic conditions or when assessing unrelated conditions or syndromes that may not have been previously considered.