K55.3 – Necrotizing enterocolitis
ICD-10-CM 2027 diagnosis code · Other diseases of intestines
ICD-10-CM code
K55.3
- Code
K55.3(claims format:K553)- Description
- Necrotizing enterocolitis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K55-K64 Other diseases of intestines
- Parent codes
- K55
Billable codes under K55.3
K55.3 is a header code and cannot be used on claims. Choose the most specific code:
Notes for K55.3
Excludes1 (not coded here):
- necrotizing enterocolitis of newborn (P77.-)
Excludes2 (not included here):
- necrotizing enterocolitis due to Clostridium difficile (A04.7-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K55 – Vascular disorders of intestine
Excludes1 (not coded here):
- necrotizing enterocolitis of newborn (P77.-)
Excludes2 (not included here):
- angioectasia (angiodysplasia) duodenum (K31.81-)
Related codes in K55
Frequently asked questions
What is ICD-10 code K55.3?
K55.3 is the ICD-10-CM code for necrotizing enterocolitis, in the block K55-K64 (Other diseases of intestines).
Is K55.3 a billable code?
No. K55.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does K55.3 belong to?
It belongs to category K55 – Vascular disorders of intestine.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.