We have all discussed in several recent threads. Algo's experience on this I must say has influenced my practice.
I never required patients to hold blood thinners for SIJ, but I now don't require them to hold thinners for facets or MBB.
Still hold thinners for ILESI, TFESI, disco, SCS, sympathetic blocks, and RF.
I'm working up to not making them hold thinners for lumbar RF, but I sometimes get 2-3ml of bleeding during RF on normal patients, and I've heard a couple horror stories of massive paraspinal hematomas in patients after RF done on thinners.
Hypervigilant about cervical ESI- I make them hold NSAIDs for 2 days, any level of aspirin for a week,and any herb I don't recognize for a week, before cervical ESI. Don't worry about those things for any other procedure as ASRA doesn't.