ICD-10-CM > N00-N99 > N80-N98 > N80 > N80.3 > N80.37 N80.37 Deep endometriosis of the pelvic brim Non-Billable/Non-Specific Codes N80.371Deep endometriosis of the right pelvic brimN80.372Deep endometriosis of the left pelvic brimN80.373Deep endometriosis of bilateral pelvic brimN80.379Deep endometriosis of the pelvic brim, unspecified side