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Path/Lab Coding:

Know When Modifier 91 Applies to Same-Day Repeat Testing

Published on Mon Apr 27, 2026

Question: The provider ordered two separate antinuclear antibodies (ANA) lab panels on the same day, coded to 86038. The blood samples for each panel were collected at the same time during the same session. We want to bill 86038 x 2, but that exceeds the payers’ Medically Unlikely Edit (MUE) of “1.” Is there a modifier we can use to [...]
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