P77Header code — not billable

Necrotizing enterocolitis of newborn

Chapter
16. Certain conditions originating in the perinatal period
Category
P77
Effective date
October 1, 2026

Related codes in category P77

P77.1Stage 1 necrotizing enterocolitis in newbornYesP77.2Stage 2 necrotizing enterocolitis in newbornYesP77.3Stage 3 necrotizing enterocolitis in newbornYesP77.9Necrotizing enterocolitis in newborn, unspecifiedYes

Frequently asked questions

What is ICD-10 code P77?

P77 is an ICD-10-CM diagnosis code for Necrotizing enterocolitis of newborn.

Is P77 a billable code?

No. P77 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is P77 in?

P77 falls under Chapter 16: Certain conditions originating in the perinatal period.

When did P77 become effective?

P77 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to P77?

P77 belongs to category P77, which includes 4 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.