ICD-10-CM > N00-N99 > N80-N98 > N80 > N80.A > N80.A4 N80.A4 Superficial endometriosis of ureter Non-Billable/Non-Specific Applicable To Extrinsic endometriosis of ureter Code Also , if applicable, obstructive and reflux uropathy (N13.-) Codes N80.A41Superficial endometriosis of right ureterN80.A42Superficial endometriosis of left ureterN80.A43Superficial endometriosis of bilateral uretersN80.A49Superficial endometriosis of unspecified ureter