IUD insertion is painful. For the first time, the CDC issued guidance for physicians.

Wait, what do you mean doctors haven't received guidance on the pain relief options before? I would've assumed it's standard practice for any potentially painful procedure to be carefully reviewed and then have guides written about them (and revised with major breakthroughs in knowledge or technology), specifically so that doctors don't have to guess what the best course of action is. And with something as relatively common as IUD, I'd assume there are more than enough female doctors having one who can vouch for them being sometimes painful enough to warrant bigger anesthetics than just an ibuprofen.