K55.3
Necrotizing enterocolitis
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
K55.3 is a non-billable ICD-10-CM code header for necrotizing enterocolitis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K55.30 Necrotizing enterocolitis, unspecified; K55.31 Stage 1 necrotizing enterocolitis; K55.32 Stage 2 necrotizing enterocolitis and K55.33 Stage 3 necrotizing enterocolitis. Its coding notes include 2 Excludes1 entries and 10 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
This code
- necrotizing enterocolitis of newborn (P77.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
This code
- necrotizing enterocolitis due to Clostridium difficile (A04.7-)
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)