Why not include HR 2991 in a larger bill?

Currently, HR 2991 is stalled in the Health Subcomittees of the House Ways and Means and House Energy and Commerce. One might assume the House is waiting to attach it to a bigger bill.

That would be a mistake. First, it's likely that whatever it gets attached to is more contoversial, while HR 2991 is not and can stand on its own. Second, if there is a need to modify an aspect of HR 2991 in the future, then it won't be considered a risk for opening some larger can of worms.