Okay, I'm a little confused. The CPT 2010 book says facet injection at T12-L1 is considered lumbar, but the new CPT 2012 for 64490 states "includes T12-L1". Also, for transforaminal injections, T12-L1 is said to be considered lumbar. Why are transforaminals lumbar and facet injections thoracic. I have never billed T12-L1 as thoracic, always lumbar. Given, the 2010 book I have is AMA and the 2012 CPT book is INGENIX. Anyone have any clarification? Please help!!