J15.5

HCC Category Mapping

What This Code Means

This is a lung infection caused by E. coli bacteria, which is an organism commonly found in the digestive system. The infection causes inflammation and fluid buildup in the lungs, making it difficult to breathe.

Coding Tips

• •Verify the documentation specifically identifies E. coli as the causative organism; culture results or lab findings should support this diagnosis
• •Consider if this is healthcare-associated pneumonia (HAP) or ventilator-associated pneumonia (VAP), as these may require additional coding with the appropriate 7th character extension for specificity

Clinical Significance

Pneumonia caused by Escherichia coli is a gram-negative bacterial pneumonia that frequently occurs in healthcare-associated settings and carries higher mortality rates than typical community-acquired pneumonia. It is more common in elderly, debilitated, or immunocompromised patients and often indicates underlying comorbidity, making it highly relevant for risk adjustment.

Documentation Requirements

• ✓Culture or molecular identification confirming E. coli as the causative organism
• ✓Clinical signs and symptoms of pneumonia documented in the assessment
• ✓Chest imaging showing infiltrate, consolidation, or other pneumonia pattern
• ✓Antibiotic therapy plan, including consideration for gram-negative coverage and resistance patterns
• ✓Setting of acquisition (nosocomial vs. community-acquired) documented
• ✓Underlying conditions predisposing to gram-negative pneumonia (if applicable)

Commonly Confused Codes