Superficial endometriosis of unspecified ureter

This code signifies the presence of endometrial tissue on the surface of an unspecified ureter. This condition, known as superficial ureteral endometriosis, can lead to symptoms such as flank pain, hematuria, or hydronephrosis due to ureteral obstruction.

Apply this code when documentation confirms superficial endometriosis affecting a ureter, but the specific left or right ureter is not identified. This diagnosis is typically made through imaging studies (e.g., MRI, CT) or direct visualization during surgery (e.g., laparoscopy).

• Ensure documentation explicitly states "superficial" and "unspecified ureter" to support this code.
• Avoid using this code if the laterality of the affected ureter (left or right) is specified; instead, use the more specific N80.A41 or N80.A42.
• Code any associated complications, such as hydronephrosis (N13.x), separately.