K55.33
Billable codeStage 3 necrotizing enterocolitis
The ICD-10 code for stage 3 necrotizing enterocolitis is K55.33.
Clinical notes
Also known as
Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.
- Necrotizing enterocolitis with perforation
- Necrotizing enterocolitis with pneumatosis and perforation
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- K55.30Necrotizing enterocolitis, unspecified
- K55.31Stage 1 necrotizing enterocolitis
- K55.32Stage 2 necrotizing enterocolitis
- K55.33Stage 3 necrotizing enterocolitis
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 5570Approximate match
Associated MS-DRGs
K55.33 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.
- DRG 314Other Circulatory System Diagnoses with MCC
- DRG 315Other Circulatory System Diagnoses with CC
- DRG 316Other Circulatory System Diagnoses without CC/MCC
- DRG 393Other Digestive System Diagnoses with MCC
- DRG 394Other Digestive System Diagnoses with CC
- DRG 395Other Digestive System Diagnoses without CC/MCC