2007 ICD-9-CM Procedure 22.50 Sinusotomy, not otherwise specified 22.50 is a specific code that can be used to specify a procedure 22.50 contains 4 index entries View the full Volume 3 22.* hierarchy Index entries containing 22.50: Removal -- see also Excision foreign body NEC -- see also Incision, by site 98.20 nasal sinus 22.50 antrum 22.2 with Caldwell-Luc approach 22.39 ethmoid 22.51 frontal 22.41 maxillary 22.2 with Caldwell-Luc approach 22.39 sphenoid 22.52 sinus (nasal) 22.50 antrum 22.2 with Caldwell-Luc approach 22.39 ethmoid 22.51 frontal 22.41 maxillary 22.2 with Caldwell-Luc approach 22.39 sphenoid 22.52 Sinusotomy (nasal) 22.50 antrum (intranasal) 22.2 with external approach (Caldwell-Luc) 22.39 radical (with removal of membrane lining) 22.31 ethmoid 22.51 frontal 22.41 maxillary (intranasal) 22.2 external approach (Caldwell-Luc) 22.39 radical (with removal of membrane lining) 22.31 multiple 22.53 perinasal 22.50 sphenoid 22.52