We’ve got the new instructions you’ll need to follow. CMS will update the ABN modifiers effective April 1, according to MLN Matters article MM6563, dated Oct. 29. The ABN descriptors will read as follows: Modifier GA — Revised to read, “Waiver of liability statement issued as required by payer policy.” You’ll use this when a required ABN was issued. Modifier GX — [...] Related articles:

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