P77.3 — Stage 3 necrotizing enterocolitis in newborn
P77.3 is a billable, specific ICD-10-CM code for stage 3 necrotizing enterocolitis in newborn. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Necrotizing enterocolitis with perforation
- Necrotizing enterocolitis with pneumatosis and perforation
Other codes that can never be billed with P77.3
These codes carry an Excludes1 note pointing at P77.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading P77.3 alone.
Risk adjustment
P77.3 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 78 Intestinal Obstruction/Perforation0.326 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
How P77.3 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P77.3.
- Enterocolitis›necrotizing›in newborn›stage 3(with pneumatosis, with perforation)
Code history
P77.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share P77. If P77.3 is not quite right, the correct code is usually one of these.
Questions about P77.3
- Is P77.3 a billable ICD-10-CM code?
- Yes. P77.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does P77.3 sit in the tabular list?
- Certain conditions originating in the perinatal period (P00-P96), in the block Digestive system disorders of newborn (P76-P78).