P77.1

ICD-10Billable

Stage 1 necrotizing enterocolitis in newborn

Official ICD-10-CM descriptor (FY2026)

Stage 1 necrotizing enterocolitis in newborn

P77.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

Necrotizing enterocolitis without pneumatosis, without perforation

Related codes in P77

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: P77

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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.