P78.9 Perinatal digestive system disorder, unspecified

Billable ICD-10-CM code, FY2026.

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)

• 777.9 Unspecified perinatal disorder of digestive system

Diagnosis Index entries for P78.9

• Disorder (of) › digestive (system) › newborn
• Disorder (of) › gastrointestinal (functional) NOS › newborn

Nearby codes

• P78.81 Congenital cirrhosis (of liver)
• P78.82 Peptic ulcer of newborn
• P78.83 Newborn esophageal reflux
• P78.84 Gestational alloimmune liver disease
• P78.89 Other specified perinatal digestive system disorders
• P78.9 Perinatal digestive system disorder, unspecified (this code)