P78.1

ICD-10Billable

Other neonatal peritonitis

Official ICD-10-CM descriptor (FY2026)

Other neonatal peritonitis

P78.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Neonatal peritonitis NOS

Related codes in P78

P78.0Perinatal intestinal perforation
P78.2Neonatal hematemesis and melena d/t swallowed matern blood
P78.3Noninfective neonatal diarrhea
P78.8Other specified perinatal digestive system disorderscategory
P78.9Perinatal digestive system disorder, unspecified

Where this code sits

Chapter: 16. Certain conditions originating in the perinatal period (P00-P96)
Block: Digestive system disorders of newborn (P76-P78)
Parent code: P78

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.