N80.2Non-Billable (Header)Endometriosis of fallopian tubeChild CodesN80.20Endometriosis of fallopian tube, unspecified depthN80.21Superficial endometriosis of fallopian tubeN80.22Deep endometriosis of the fallopian tubeCode Hierarchy└N80Endometriosis└N80.2Endometriosis of fallopian tube└N80.2Endometriosis of fallopian tube