Endometriosis of the left pelvic sidewall, unspecified depth

This code describes the presence of endometrial-like tissue abnormally located on the left pelvic sidewall. This condition can cause chronic pelvic pain, dyspareunia, and infertility. The "unspecified depth" indicates that the extent of tissue infiltration into the sidewall is not documented.

Use this code when documentation confirms endometriosis specifically affecting the left pelvic sidewall, but the depth of invasion (e.g., superficial, deep) is not specified. This diagnosis is typically made via imaging (e.g., MRI, ultrasound) or surgical visualization (e.g., laparoscopy).

• Do not use this code if the depth of endometriosis on the left pelvic sidewall is documented; instead, select a more specific code from the N80.35 series.
• Always review operative reports and pathology findings for precise anatomical location and depth of endometriosis.
• Consider sequencing this code after codes for associated symptoms (e.g., chronic pelvic pain) if the endometriosis is the underlying cause.