O23.43 Unspecified infection of urinary tract in pregnancy, third trimester

Name of the Condition

• Unspecified infection of urinary tract in pregnancy, third trimester
• ICD-10 Code: O23.43

Summary

Unspecified infection of the urinary tract in pregnancy, third trimester, refers to bacterial, viral, or fungal infections affecting the urinary system during the third trimester of pregnancy, where the specific site of infection is not documented. These infections may range from mild to severe and require evaluation to prevent complications for both the mother and fetus.

Causes

Urinary tract infections in pregnancy are often caused by bacteria, such as Escherichia coli, that ascend from the urethra or vagina. Hormonal changes and uterine pressure can alter urinary flow, increasing the risk of bacterial growth. Viral or fungal infections may also occur due to immunological changes during pregnancy.

Risk Factors

• Previous history of urinary tract infections.
• Pregnancy-related urinary stasis.
• Poor hygiene practices.
• Sexual activity during pregnancy.
• Underlying conditions like diabetes or immunosuppression.

Symptoms

• Burning or pain during urination.
• Frequent or urgent urination.
• Lower abdominal or pelvic discomfort.
• Cloudy, foul-smelling urine.
• Fever, chills, or systemic symptoms in severe cases.

Diagnosis

Diagnosis typically involves urinalysis to detect bacteria or abnormal cells, urine culture to identify pathogens, and clinical evaluation of symptoms. Additional testing may be performed if complications are suspected.

Treatment Options

Treatment may include antibiotics safe for pregnancy, increased fluid intake, and close monitoring. Severe cases may require hospitalization or intravenous antibiotics.

Prognosis and Follow-Up

With prompt treatment, most urinary tract infections in pregnancy resolve without long-term complications. Follow-up may involve repeat urine cultures to ensure infection clearance and monitoring for recurrence.

Complications

Untreated infections may lead to pyelonephritis, preterm labor, low birth weight, or sepsis. Early intervention reduces these risks.

Lifestyle & Prevention

• Maintain good hygiene practices.
• Stay hydrated to promote urinary flow.
• Urinate before and after sexual activity.
• Avoid irritants like harsh soaps or douches.

When to Seek Professional Help

Seek care if symptoms worsen, persist after treatment, or if systemic signs like fever or chills develop.

Tips for Medical Coders

Document the trimester (third trimester) and specify if the infection is unspecified. Ensure clinical documentation supports the diagnosis and trimester for accurate coding.