The Centers for Medicare and Medicaid Services (CMS) recently released a new inpatient rehabilitation facility (IRF) Grouper (Version 4.01), which is effective retroactively to April 1, 2020. This new version includes a new ICD-10-CM code for COVID-19. This new code, U07.1, should be used for assessments with a discharge date of April 1, 2020 or later.