ICD-10-CM > N00-N99 > N80-N98 > N80 > N80.2 > N80.20 N80.20 Endometriosis of fallopian tube, unspecified depth Non-Billable/Non-Specific Codes N80.201Endometriosis of right fallopian tube, unspecified depthN80.202Endometriosis of left fallopian tube, unspecified depthN80.203Endometriosis of bilateral fallopian tubes, unspecified depthN80.209Endometriosis of unspecified fallopian tube, unspecified depth