2007 ICD-9-CM Procedure 02.91 Lysis of cortical adhesions 02.91 is a specific code that can be used to specify a procedure 02.91 contains 4 index entries View the full Volume 3 02.* hierarchy Index entries containing 02.91: Division brain tissue 01.32 cortical adhesions 02.91 Incision (and drainage) brain 01.39 cortical adhesions 02.91 Lysis adhesions cortical (brain) 02.91 meninges (spinal) 03.6 cortical 02.91