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MM13340 - Hospital Outpatient Prospective Payment System: October 2023 Update

This revised Article comprises Subregulatory Guidance to Make sure your billing staffs know about new COVID-19 CPT vaccines and administration codes, proprietary laboratory analyses (PLA) coding changes, multianalyte assays with algorithmic analyses (MAAA) CPT coding change, advanced diagnostic laboratory tests (ADLTs) under the clinical lab fee schedule (CLFS), HCPCS code changes. MLN Matters (MM) Articles are based on information contained within Change Requests (CRs). In this case, this article is based on content within CR13340 that is posted on the CMS website at

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Issued by: Centers for Medicare & Medicaid Services (CMS)

Issue Date: September 06, 2023

DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.