P77.9 — Necrotizing enterocolitis in newborn, unspecified

P77.9

ICD-10 Chapter 16: Perinatal Period — illustrative image — Chapter 16: Certain conditions originating in the perinatal period (P00–P96) — illustrative image

What this code means

Necrotising enterocolitis is a serious bowel condition of newborns, mainly preterm babies, in which bowel tissue becomes inflamed and damaged.

Also called: necrotizing enterocolitis, nec.

When this code is used

Used for necrotising enterocolitis of newborn, unspecified.

Where it sits in ICD-10-CM

Code P77.9 belongs to Chapter 16: Certain conditions originating in the perinatal period, which covers codes P00–P96 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.

Frequently asked questions

What is ICD-10-CM code P77.9?

P77.9 is the ICD-10-CM diagnosis code for “Necrotizing enterocolitis in newborn, unspecified”. Necrotising enterocolitis is a serious bowel condition of newborns, mainly preterm babies, in which bowel tissue becomes inflamed and damaged.

When is code P77.9 used?

Used for necrotising enterocolitis of newborn, unspecified. It belongs to Chapter 16 of ICD-10-CM (Certain conditions originating in the perinatal period).

This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.