P77.3

Billable

Stage 3 necrotizing enterocolitis in newborn

HCC Category Mapping

V28HCC 78 — Intestinal Obstruction/Perforation

0.000

What This Code Means

Severe stage necrotizing enterocolitis in a newborn with intestinal perforation and peritonitis, representing the most critical form of the disease.

Coding Tips

•Stage 3 NEC indicates perforation; document evidence of free air, peritonitis, or surgical findings confirming perforation
•This is a critical condition requiring immediate intervention; ensure all complications are coded separately (e.g., peritonitis, sepsis)

Clinical Significance

Stage 3 NEC represents the most severe form requiring immediate surgical intervention due to intestinal perforation and peritonitis. This life-threatening condition has high morbidity and mortality rates, requiring intensive multidisciplinary care and long-term monitoring for complications.

Documentation Requirements

✓Radiographic evidence of pneumoperitoneum or intestinal perforation
✓Clinical signs of peritonitis and systemic deterioration
✓Surgical consultation and intervention documentation
✓Evidence of hemodynamic instability or shock
✓Laboratory findings consistent with severe illness
✓Operative reports if surgery performed
✓Intensive care management documentation
✓Long-term outcome and complication monitoring

Commonly Confused Codes

P77.1 — Stage 1 necrotizing enterocolitis (early stage without perforation)P77.2 — Stage 2 necrotizing enterocolitis (pneumatosis without perforation)P77.9 — Necrotizing enterocolitis, unspecified (stage not documented)P78.1 — Other perinatal intestinal perforation (perforation from other causes)

Code Hierarchy

└P77Necrotizing enterocolitis of newborn └P77.3Stage 3 necrotizing enterocolitis in newborn

└P77.3Stage 3 necrotizing enterocolitis in newborn