K65.0 Generalized (acute) peritonitis

Name of the Condition

• Common name(s): Generalized (acute) peritonitis
• Medical term: Generalized (acute) peritonitis

Summary

Generalized (acute) peritonitis is a severe inflammation of the peritoneum, the membrane lining the abdominal cavity and covering abdominal organs. This condition involves widespread irritation or infection within the peritoneal space, often requiring urgent medical intervention to prevent life-threatening complications.

Causes

Generalized (acute) peritonitis typically results from bacterial or fungal infections that spread throughout the peritoneal cavity. Common triggers include perforation of the gastrointestinal tract (e.g., from ulcers, diverticulitis, or appendicitis), abdominal trauma, or post-surgical contamination. Non-infectious causes may include chemical irritation from bile, pancreatic enzymes, or blood entering the peritoneal space.

Risk Factors

• Perforated abdominal organs (e.g., appendix, stomach, intestine)
• Recent abdominal surgery or procedures
• Abdominal trauma or injury
• Compromised immune system
• Pre-existing inflammatory conditions (e.g., pancreatitis, diverticulitis)
• Long-term peritoneal dialysis

Symptoms

• Severe, generalized abdominal pain that worsens with movement
• Abdominal rigidity or tenderness
• Fever and chills
• Nausea, vomiting, or loss of appetite
• Bloating or distension
• Rapid heart rate or breathing
• Fatigue or weakness

Diagnosis

Diagnosis involves a combination of physical examination to assess abdominal tenderness and rigidity, imaging studies (e.g., CT scan or ultrasound) to identify inflammation or fluid, and laboratory tests (e.g., elevated white blood cell count, signs of infection). A thorough patient history, including recent surgeries or injuries, is also critical.

Treatment Options

• Immediate antibiotic therapy to target the underlying infection
• Surgical intervention to repair perforations, remove infected tissue, or drain abscesses
• Supportive care, including intravenous fluids and pain management
• Monitoring for sepsis or organ failure

Prognosis and Follow-Up

Prognosis depends on the underlying cause, timeliness of treatment, and patient health. Early intervention improves outcomes, but severe cases may lead to sepsis or multi-organ failure. Follow-up care includes monitoring for recurrence, managing complications, and addressing any underlying conditions.

Complications

• Sepsis or septic shock
• Organ failure (e.g., kidney, liver)
• Abdominal abscess formation
• Adhesions or bowel obstruction
• Chronic peritoneal scarring

Lifestyle & Prevention

• Prompt treatment of abdominal infections or injuries
• Adherence to post-surgical care instructions
• Maintaining a healthy immune system through balanced nutrition and hygiene
• Avoiding unnecessary abdominal trauma

When to Seek Professional Help

Seek immediate medical attention for severe abdominal pain, fever, or signs of infection, especially after surgery or injury. Persistent symptoms or worsening condition require urgent evaluation.

Tips for Medical Coders

Document the clinical findings supporting generalized peritonitis, including the extent of inflammation, source of infection (if identified), and treatment provided. Ensure documentation aligns with the acute nature of the condition and any associated complications.