Stage 2 necrotizing enterocolitis in newborn

This code signifies a severe gastrointestinal emergency in neonates, characterized by inflammation and necrosis of the bowel, specifically reaching Stage 2 according to Bell's staging criteria. Stage 2 involves pneumatosis intestinalis (gas in the bowel wall) and mild to moderate metabolic acidosis, but without signs of perforation or peritonitis.

Use this code when documentation clearly indicates a newborn diagnosed with necrotizing enterocolitis (NEC) that has progressed to Stage 2. This stage is typically confirmed by radiographic findings of pneumatosis intestinalis and clinical signs such as abdominal distension, bloody stools, and systemic symptoms like lethargy and temperature instability.

• Ensure the medical record explicitly states "Stage 2" or provides clinical details consistent with Bell's Stage 2 criteria.
• Do not confuse with earlier or later stages of NEC; specific codes exist for other stages.
• Code any associated complications, such as sepsis or metabolic derangements, in addition to the NEC.