2007 ICD-9-CM Procedure 90.8 Microscopic examination of specimen from upper gastrointestinal tract and of vomitus 90.8 is a non-specific code that should not be used to specify a procedure 90.8 contains 6 index entries View the full Volume 3 90.* hierarchy Index entries containing 90.8: Examination (for) microscopic (specimen) (of) 91.9 dental 90.8 duodenum 90.8 esophagus 90.8 mouth 90.8 stomach 90.8 vomitus 90.8