O98.313 Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester

Name of the Condition

• Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester (ICD Code: O98.313)

Summary

This condition involves infections primarily spread through sexual contact that occur during the third trimester of pregnancy. These infections can affect maternal health and may pose risks to the fetus if not managed appropriately.

Causes

Primary causes are sexually transmitted infections (STIs) such as chlamydia, gonorrhea, syphilis, herpes, and human papillomavirus (HPV). These infections are transmitted through sexual activity and may complicate pregnancy-related care.

Risk Factors

• Unprotected sexual intercourse
• Multiple sexual partners
• Previous history of STIs
• Lack of regular prenatal screening
• Delayed or inadequate treatment of pre-existing infections

Symptoms

Symptoms vary by infection but may include unusual vaginal discharge, genital itching, pain during urination, sores or lesions, or abnormal bleeding. Some infections may be asymptomatic, increasing the risk of undiagnosed transmission.

Diagnosis

Diagnosis typically involves laboratory testing (e.g., blood tests, urine samples, or genital swabs) to identify the specific infectious agent. Physical examinations and patient history are also used to assess symptoms and exposure risks.

Treatment Options

• Antibiotics or antiviral medications specific to the infection
• Safe and appropriate treatment ensures the health of both the mother and the unborn child and may involve collaboration with obstetric specialists.

Prognosis and Follow-Up

With timely and appropriate treatment, the prognosis is generally favorable. Follow-up care includes monitoring for treatment response and retesting to confirm resolution, especially in the third trimester to prevent transmission to the newborn.

Complications

• Preterm labor or delivery
• Low birth weight
• Neonatal infection (e.g., conjunctivitis, pneumonia)
• Maternal pelvic inflammatory disease or other systemic complications

Lifestyle & Prevention

• Consistent use of barrier methods (e.g., condoms) during sexual activity
• Regular prenatal screening for STIs
• Limiting sexual partners and ensuring partner testing/treatment
• Avoiding high-risk sexual behaviors

When to Seek Professional Help

Seek medical attention if experiencing unusual discharge, pain, sores, or other symptoms of infection, or if concerned about exposure to an STI during pregnancy.

Tips for Medical Coders

Document the specific infection (if known) and trimester of pregnancy. Ensure the code aligns with the timing of infection and pregnancy stage. Include details about maternal and fetal management when available.