Back in 2006 or so, the Bureau of Hearings and Appeals changed its name to the Office of Disability Adjudication and Review (ODAR), as part of a reorganization at Social Security and new regulations. The name was widely panned at the time.
Now, a decade or so later, the Hearings office has been renamed the Office of Hearings Operations (OHO). The new name makes sense.
Be sure to change your forms and letters to reflect the new name.