Deep endometriosis of the rectum

This code signifies the presence of endometrial-like tissue infiltrating deeply into the muscularis propria or beyond of the rectum. This condition is a specific form of endometriosis, causing symptoms such as dyschezia, rectal bleeding, and pelvic pain. It is often associated with significant morbidity due to its invasive nature.

Apply this code when documentation explicitly states deep endometriosis involving the rectum, confirmed by imaging (e.g., MRI, transrectal ultrasound) or histopathology. This diagnosis is typically made following surgical exploration or biopsy. Use when the depth of invasion into the rectal wall is clearly indicated as "deep."

• Differentiate from superficial rectal endometriosis, which would be coded differently.
• Ensure documentation specifies "deep" involvement of the rectum; otherwise, a more general endometriosis code may be appropriate.
• Consider sequencing with codes for associated symptoms (e.g., chronic pelvic pain, dyschezia) or complications.