The following information appeared on, CMS.gov
Effective July 1, 2021, CMS made the addition of the QW modifier to HCPCS code 87636 [Infectious agent detection by nucleic acid (DNA or RNA); severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (Coronavirus disease [COVID-19]) and influenza virus types A and B, multiplex amplified probe technique].
