P78.1 Other neonatal peritonitis

Billable ICD-10-CM code, FY2026.

Applicable to

• Neonatal peritonitis NOS

Applies from P78 Other perinatal digestive system disorders

Excludes1 (never code together)

• cystic fibrosis (E84.0-E84.9)
• neonatal gastrointestinal hemorrhages (P54.0-P54.3)

MS-DRG index

Defines the logic of DRG(s) 794 in MDC 15.

Approximate ICD-9-CM (GEMs)

• 777.8 Other specified perinatal disorders of digestive system (approximate)

Code annotations containing back-references to P78.1

Back-references to P78.1

• Type 1 Excludes: K65 Peritonitis ("neonatal peritonitis (P78.0-P78.1)")

Diagnosis Index entries for P78.1

• Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion) › congenital
• Peritonitis (adhesive) (bacterial) (fibrinous) (hemorrhagic) (idiopathic) (localized) (perforative) (primary) (with adhesions) (with effusion) › neonatal

Nearby codes

• P78 Other perinatal digestive system disorders
• P78.0 Perinatal intestinal perforation
• P78.1 Other neonatal peritonitis (this code)
• P78.2 Neonatal hematemesis and melena due to swallowed maternal blood
• P78.3 Noninfective neonatal diarrhea
• P78.8 Other specified perinatal digestive system disorders
• P78.81 Congenital cirrhosis (of liver)
• P78.82 Peptic ulcer of newborn