ICD-10-CM Billable Code

N80.4

Endometriosis of rectovaginal septum and vagina

Clinical Classification Guidelines

Medical Intelligence & Overview

Endometriosis is a chronic condition where tissue similar to the lining inside the uterus (endometrial tissue) grows outside the uterine cavity. When this abnormal tissue is located in the rectovaginal septum—the tissue separating the rectum and vagina—and the vaginal area, it is classified under ICD-10 code N80.4. This form of endometriosis can lead to significant discomfort and impact daily life due to its location and effects.

Causes & Symptoms

Clinical Causes: Genetic predisposition; a family history of endometriosis increases risk. Retrograde menstruation, where menstrual blood flows backward into the pelvic cavity instead of leaving the body. Immune system dysfunction, which may prevent the body from clearing misplaced endometrial tissue. Hormonal factors, especially excess estrogen that promotes tissue growth. Developmental factors during fetal development, which may predispose areas like the vaginal wall and rectovaginal septum to abnormal tissue growth. Environmental exposures to certain chemicals or toxins that influence hormonal balance.

Key Symptoms: Pelvic pain, often worsening during menstruation or strained bowel movements. Pain during sexual intercourse (dyspareunia), especially involving deep penetration. Chronic discomfort or pressure in the rectovaginal area. Painful bowel movements or constipation during periods. Feeling of fullness or pressure in the vaginal area. Possible bleeding or spotting outside of menstrual periods if the endometrial-like tissue involves the vaginal wall. Infertility may be associated with the condition.

Diagnostic & Treatment

Diagnosis Path: A detailed medical history, focusing on symptom patterns and reproductive health. Pelvic examination to detect abnormalities or tender areas. Imaging tests such as transvaginal ultrasound, which helps visualize cysts or lesions attached to reproductive organs. Magnetic resonance imaging (MRI) for more detailed imaging of soft tissues. Laparoscopy, a minimally invasive surgical procedure, remains the definitive method to diagnose and sometimes treat this form of endometriosis directly.

Treatment Protocols: Pain management with NSAIDs (nonsteroidal anti-inflammatory drugs) to alleviate discomfort. Hormonal therapies such as hormonal contraceptives, GnRH agonists or antagonists, and progestins, which help suppress endometrial tissue growth. Surgical options to remove endometrial lesions, adhesions, or cysts, often performed via laparoscopy. Lifestyle modifications including stress reduction, regular exercise, and dietary adjustments. Physical therapy or pelvic floor therapy to reduce muscular tension and pain. In some cases, assisted reproductive techniques may be recommended if infertility is an issue.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is N80.4 a billable ICD-10 code?
Yes, N80.4 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report N80.4?
Clinical documentation must specify the nature of Endometriosis of rectovaginal septum and vagina and any associated comorbidities for accurate reporting.

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