N80.31Endometriosis of the anterior cul-de-sac

N80.31 is the ICD-10-CM diagnosis code for endometriosis of the anterior cul-de-sac. It belongs to category N80 (endometriosis), block N80-N98 (noninflammatory disorders of female genital tract) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within N80.3 (endometriosis of pelvic peritoneum), N80.31 is specifically for endometriosis of the anterior cul-de-sac. Related codes cover unspecified (N80.30), endometriosis of the posterior cul-de-sac (N80.32), superficial endometriosis of the pelvic sidewall (N80.33), deep endometriosis of the pelvic sidewall (N80.34), endometriosis of the pelvic sidewall, unspecified depth (N80.35), superficial endometriosis of the pelvic brim (N80.36), deep endometriosis of the pelvic brim (N80.37), endometriosis of the pelvic brim, unspecified depth (N80.38) and 4 more.

To report this condition, pick the subcode that matches the documentation: N80.311 (cul-de-sac), N80.312 (cul-de-sac) and N80.319 (unspecified depth).

It was added in FY2023, effective October 1, 2022.