2021 ICD-10-CM Code P77

Necrotizing enterocolitis of newborn

Version 2021
Non-Billable Code

Not Valid for Submission

P77 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of necrotizing enterocolitis of newborn. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:P77
Short Description:Necrotizing enterocolitis of newborn
Long Description:Necrotizing enterocolitis of newborn

Code Classification

Specific Coding for Necrotizing enterocolitis of newborn

Header codes like P77 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for necrotizing enterocolitis of newborn:

  • P77.1 - Stage 1 necrotizing enterocolitis in newborn
  • P77.2 - Stage 2 necrotizing enterocolitis in newborn
  • P77.3 - Stage 3 necrotizing enterocolitis in newborn
  • P77.9 - Necrotizing enterocolitis in newborn, unspecified

Information for Patients


Premature Babies

Also called: Preemies

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.

Important growth and development happen throughout pregnancy - especially in the final months and weeks. Because they are born too early, preemies weigh much less than full-term babies. They may have health problems because their organs did not have enough time to develop. Problems that a baby born too early may have include

Preemies need special medical care in a neonatal intensive care unit, or NICU. They stay there until their organ systems can work on their own.

Centers for Disease Control and Prevention


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Small Intestine Disorders

Your small intestine is the longest part of your digestive system - about twenty feet long! It connects your stomach to your large intestine (or colon) and folds many times to fit inside your abdomen. Your small intestine does most of the digesting of the foods you eat. It has three areas called the duodenum, the ileum, and the jejunum.

Problems with the small intestine can include:

Treatment of disorders of the small intestine depends on the cause.


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)