TFESI is an acronym for Transforaminal Epidural Steroid Injection. This is a procedure traditionally completed by a pain management specialist and occasionally by spine surgeons. There are several indications to perform this procedure, they mainly include pain for disc bulges and/herniations with narrowing around the spinal cord or the nerve branches off the of the spinal cord (these nerves exit out a gap between the bones of the spinal column called the neural foramen).