ICD-10-CM > N00-N99 > N80-N98 > N80 > N80.2 > N80.22 N80.22 Deep endometriosis of the fallopian tube Non-Billable/Non-Specific Applicable To Deep endometriosis involving muscular wall of fallopian tube Codes N80.221Deep endometriosis of right fallopian tubeN80.222Deep endometriosis of left fallopian tubeN80.223Deep endometriosis of bilateral fallopian tubesN80.229Deep endometriosis of unspecified fallopian tube