CPT® Code 81249

The CPT® Code 81249 pertains to the gene analysis of glucose-6-phosphate dehydrogenase (G6PD), which is crucial for understanding various hematological conditions, particularly those related to hemolytic anemia and jaundice. G6PD is an enzyme that plays a significant role in the metabolic pathway of red blood cells, aiding in carbohydrate processing and providing protection against oxidative stress. A deficiency in this enzyme can lead to significant health issues, especially in certain populations, as it is predominantly found in males of African, Asian, Mediterranean, and Middle Eastern descent. The G6PD gene is located on the long (q) arm of the X chromosome at position 28, making it subject to X-linked inheritance patterns. G6PD deficiency can manifest in several clinical forms, including neonatal jaundice, acute hemolytic anemia, and chronic non-spherocytic hemolytic anemia. The severity of the deficiency is classified into four distinct classes, ranging from Class I, which indicates severe deficiency and chronic hemolytic anemia, to Class IV, which represents a mild deficiency with minimal clinical symptoms. Symptoms associated with G6PD deficiency include pale skin, jaundice, fatigue, dyspnea, tachycardia, and dark-colored urine. The gene analysis performed under this code is particularly useful for diagnosing G6PD deficiency in infants with unexplained jaundice, as well as in males of any age presenting with anemia or jaundice. Additionally, it can assess the carrier status in females who have a family history of G6PD deficiency. The testing process involves obtaining a blood sample, which can be collected through various means, and analyzing it for common variants and familial variants using advanced techniques such as polymerase chain reaction (PCR) and bi-directional Sanger Sequencing Analysis. This comprehensive approach ensures accurate identification of G6PD variants, facilitating appropriate clinical management and intervention.