CPT® Code 81223

The CPT® Code 81223 refers to the molecular genetic testing performed to analyze the full gene sequence of the CFTR (cystic fibrosis transmembrane conductance regulator) gene, which is located on chromosome 7. This gene is crucial as it encodes the protein responsible for regulating the movement of chloride ions across epithelial cell membranes. Mutations in the CFTR gene lead to cystic fibrosis, a genetic disorder characterized by the production of thick, sticky mucus that can obstruct airways and glands, significantly impacting respiratory and digestive functions. Cystic fibrosis is one of the most prevalent autosomal recessive diseases, particularly among Caucasian populations and those of Ashkenazi Jewish descent. Individuals who inherit a mutated CFTR gene from both parents may exhibit varying degrees of symptoms, ranging from mild to severe, while those inheriting a mutation from only one parent become carriers without showing symptoms. The severity of cystic fibrosis can be influenced by the specific mutations present, with certain homozygous pairings, such as del508F/del508F, being associated with more severe disease manifestations. The condition often leads to serious complications, including respiratory infections, pancreatic insufficiency, and other related health issues. The life expectancy for individuals with cystic fibrosis, even in mild cases, averages around 30 years. The full gene sequence analysis provided by CPT® Code 81223 is essential for identifying a wide range of CFTR mutations, as it encompasses the examination of all exons, intron/exon borders, promoter regions, and specific intronic regions, thereby allowing for a comprehensive understanding of the genetic factors contributing to cystic fibrosis.