2026 ICD-10-CM Diagnosis Code P77Necrotizing enterocolitis of newborn

ICD-10-CM Codes›P00–P96›P76-P78›P77

ICD-10-CM P77
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

P77 is a non-billable ICD-10-CM category code for necrotizing enterocolitis of newborn, so it cannot be submitted on claims. Use a more specific code from this category instead, such as P77.1, P77.2, P77.3, and P77.9.

Code Identity

ICD-10-CM Code
P77
Billable Status
No — Non-Billable Category
Code Describes
Necrotizing enterocolitis of newborn
Short Description
Necrotizing enterocolitis of newborn
Same as the full description in the CMS dataset.
Chapter
P76-P78
Digestive system disorders of newborn

Code Classification

ChapterP00–P96Certain conditions originating in the perinatal period
SectionP76-P78Digestive system disorders of newborn
CategoryP77Necrotizing enterocolitis of newborn
This CodeP77Necrotizing enterocolitis of newborn

Specific Coding for Necrotizing enterocolitis of newbornOverview

Non-specific codes like P77 require more characters. Use one of these billable codes instead:

  • Use P77.1 for Stage 1 necrotizing enterocolitis in newborn

  • Use P77.2 for Stage 2 necrotizing enterocolitis in newborn

  • Use P77.3 for Stage 3 necrotizing enterocolitis in newborn

  • Use P77.9 for Necrotizing enterocolitis in newborn, unspecified

Patient EducationClinical

Premature Babies

Almost 1 of every 10 infants born in the United States are premature, or preemies. A premature birth is when a baby is born before 37 completed weeks of pregnancy. A full-term pregnancy is 40 weeks.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About P77Overview

Is P77 (Necrotizing enterocolitis of newborn) a billable code?

No. This is a category header that groups the codes for necrotizing enterocolitis of newborn, and headers cannot be submitted on claims. Claims for necrotizing enterocolitis of newborn need a more specific code from this category, such as P77.1, P77.2, and P77.3.