O86.21 Infection of kidney following delivery

Name of the Condition

• Infection of kidney following delivery (O86.21)

Summary

Infection of kidney following delivery refers to a urinary tract infection (UTI) involving the kidneys that occurs during the postpartum period. This condition requires prompt medical attention to prevent complications and ensure proper recovery.

Causes

Kidney infections after delivery typically result from bacterial ascent from the lower urinary tract, often due to untreated or inadequately treated bladder infections. Common pathogens include Escherichia coli and other gram-negative bacteria. Risk increases with factors that impair urinary drainage or immune function.

Risk Factors

• Prolonged labor or membrane rupture
• Cesarean delivery
• Retained placental fragments
• Multiple vaginal examinations during labor
• Preexisting infections (e.g., chorioamnionitis)
• Poor perineal hygiene
• Immunosuppression or underlying medical conditions
• Urinary catheter use during delivery

Symptoms

• Fever (temperature >38°C or 100.4°F)
• Flank pain or tenderness
• Chills or rigors
• Nausea or vomiting
• Dysuria (painful urination)
• Frequency or urgency of urination
• Cloudy or foul-smelling urine

Diagnosis

Diagnosis involves clinical evaluation of symptoms, physical examination (e.g., flank tenderness), and laboratory tests (e.g., urinalysis, urine culture, blood cultures). Imaging may be used if complications are suspected.

Treatment Options

Treatment typically includes antibiotics targeted at the identified pathogen, often administered intravenously initially, followed by oral therapy. Adequate hydration and pain management may also be necessary. Hospitalization may be required for severe cases.

Prognosis and Follow-Up

With prompt treatment, most patients recover fully. Follow-up may involve repeat urine cultures to ensure resolution and monitoring for recurrence. Complications are rare with appropriate care but can include sepsis or chronic kidney damage if untreated.

Complications

• Sepsis or septic shock
• Abscess formation in the kidney
• Chronic kidney disease (rare)
• Preterm labor in future pregnancies (if infection recurs)

Lifestyle & Prevention

• Maintain good perineal hygiene
• Ensure adequate hydration
• Empty the bladder regularly
• Avoid urinary catheter use when possible
• Promptly treat lower UTIs to prevent ascent

When to Seek Professional Help

Seek immediate medical attention if experiencing fever, severe flank pain, or signs of systemic infection (e.g., chills, confusion) after delivery.

Tips for Medical Coders

Document the infection’s location (kidney) and timing (postpartum) clearly. Ensure the diagnosis is supported by clinical findings and laboratory results. Note any contributing factors, such as catheter use or preexisting conditions, to support code assignment.