2007 ICD-9-CM Procedure 89.15 Other nonoperative neurologic function tests 89.15 is a specific code that can be used to specify a procedure 89.15 contains 5 index entries View the full Volume 3 89.* hierarchy Index entries containing 89.15: Conduction study, nerve 89.15 Manometry spinal fluid 89.15 Study conduction, nerve (median) 89.15 Test, testing (for) function neurologic NEC 89.15 neurologic function NEC 89.15