In simple words: This code refers to a condition where tissue similar to the lining of the uterus grows deep within the ligaments that support the uterus, but it doesn't specify which side.

Deep endometriosis affecting the uterosacral ligaments, without specifying whether it's the right, left, or bilateral ligaments.

Example 1: A 35-year-old female patient presents with chronic pelvic pain and dysmenorrhea. During a laparoscopic examination, deep infiltrating endometriosis is found in the uterosacral ligaments, without specifying the side., A 42-year-old female patient undergoing infertility evaluation is found to have deep endometriosis of the uterosacral ligaments, but the surgeon's documentation does not specify whether it affects the right, left, or both ligaments., A patient presents with dyspareunia and is diagnosed with deep endometriosis. Imaging studies show involvement of the uterosacral ligaments, without lateralization.

Documentation should include details of the location and depth of endometriosis, including operative findings or imaging results. If the side of the uterosacral ligament is not specified in the documentation, N80.3B9 should be used.

** Code N80.3B9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM N80.3B9 became effective on October 1, 2024.