CPT® Code 82658

The CPT® Code 82658 refers to a laboratory test that assesses enzyme activity in blood cells, cultured cells, or tissue using a radioactive substrate. This test is particularly significant in the context of diagnosing inherited genetic disorders, which often arise from mutations in genes that code for enzyme proteins. These enzymes play crucial roles in the breakdown, transportation, activation, or protection of various compounds essential for normal bodily functions. By monitoring enzyme activity in blood or tissue samples, healthcare professionals can gain valuable insights into potential genetic disorders. Specifically, this code is applicable for tests that evaluate leukocyte lysosomal enzymes in whole blood, which is instrumental in screening for lysosomal storage diseases. These rare disorders result from the accumulation of undigested or partially digested macromolecules, such as fats, proteins, and complex carbohydrates, within cells. This accumulation can lead to significant dysfunction in various body organs, connective tissues, the eyes, and the central nervous system, highlighting the importance of this diagnostic test in clinical practice.