2007 ICD-9-CM Procedure 11.31 Transposition of pterygium 11.31 is a specific code that can be used to specify a procedure 11.31 contains 4 index entries View the full Volume 3 11.* hierarchy Index entries containing 11.31: Dissection -- see also Excision pterygium (with reposition) 11.31 McReynolds operation (transposition of pterygium) 11.31 Operation McReynolds (transposition of pterygium) 11.31 Transposition pterygium 11.31