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Pathology/Lab Coding Alert

Reader Questions:

Look for Modifier 91 to Clarify Case

Published on Fri Jan 12, 2024

Question: A physician ordered a D-dimer test for a patient suspected of having a stroke. The level was normal. The physician ordered a second D-dimer test 12 hours later, and the level was elevated to 0.7 mg/L FEU. We reported two units of 85738 but payment was denied. What could be the error? Texas Subscriber Answer: The D-dimer test code is 85378 [...]
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