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Pathology/Lab Coding Alert

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Embrace Specimen Flexibility for TPMT Test

Published on Mon Feb 13, 2023

Question: Our lab is performing a test for “Thiopurine Methyltrans­ferase (TPMT), erythrocytes.” We used to code the test as 82657. Can we use the new code 84433, even though the code does not include the term “erythrocytes” in its description? Texas subscriber Answer: Yes, you should use new code 84433 (Thiopurine S-methyltransferase (TPMT)) for the test you describe because it is more [...]
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