ICD-10 Code K55.30 – Necrotizing enterocolitis, unspecified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K55.30 – Necrotizing enterocolitis, unspecified
What it is
K55.30 identifies necrotizing enterocolitis when the record does not specify a more detailed site, severity, or variant. It is used for this serious intestinal condition when documentation is limited.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings include abdominal distention, feeding intolerance, vomiting, bloody stools, and signs of bowel inflammation or injury.
When to use this code
Use K55.30 when the provider documents necrotizing enterocolitis but does not specify further detail. It also fits when the note confirms the diagnosis and no more specific ICD-10-CM option is supported. If the chart later identifies a more precise type or site, code that instead.
Do not use for
Do not use this code for other intestinal ischemic disorders or for abdominal symptoms without a confirmed diagnosis. Check documentation if the record specifies a different form of enterocolitis.
Coding tip
Code the most specific documented form of necrotizing enterocolitis; if specificity is missing, K55.30 is appropriate.