2007 ICD-9-CM Procedure 81.3 Refusion of spine 81.3 is a non-specific code that should not be used to specify a procedure View the full Volume 3 81.* hierarchy Code also any insertion of interbody spinal fusion device (84.51) any insertion of recombinant bone morphogenetic protein (84.52) the total number of vertebrae fused (81.62-81.64) 81.3 includes: arthrodesis of spine with: bone graft internal fixation correction of pseudarthrosis of spine