CPT® Code 78272

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The CPT® Code 78272 refers to a laboratory test known as Vitamin B-12 absorption studies, which are conducted both with and without intrinsic factor. This test is essential for measuring the absorption of Vitamin B-12, also known as cobalamin, which plays a critical role in several bodily functions, including the production of red blood cells (RBCs), the replication of DNA and RNA for cell development, and the proper functioning of the nervous system. The Vitamin B-12 absorption study is particularly useful in evaluating patients for conditions such as pernicious anemia, a type of anemia caused by the inability to absorb Vitamin B-12 due to a lack of intrinsic factor. The procedure involves administering an oral dose of Vitamin B-12 that is labeled with an isotope tracer, such as Cobalt 57 or Cobalt 58. This allows for the tracking of the Vitamin B-12 as it is absorbed through the gastrointestinal tract. The test is structured in stages, with the first stage (CPT® Code 78270) involving the administration of the labeled Vitamin B-12 followed by a 24-hour urine collection to measure the percentage of excreted labeled B-12, indicating the amount absorbed. If the results from the first stage are abnormal, a second stage (CPT® Code 78271) is performed, which includes the administration of intrinsic factor along with the labeled Vitamin B-12. CPT® Code 78272 is specifically utilized when the Schilling test is conducted using dual isotope tracers, allowing both stages of the test to be performed simultaneously. In this case, one isotope labels the Vitamin B-12 without intrinsic factor, while another labels the Vitamin B-12 with intrinsic factor. This dual approach enhances the efficiency of the testing process and provides comprehensive data regarding the absorption capabilities of the patient. The results are then analyzed, and a written report is generated by the physician, detailing the findings of the Vitamin B-12 absorption study.