ICD-10-CM Code K55.33

Stage 3 necrotizing enterocolitis

Version 2020 Billable Code

Valid for Submission

K55.33 is a billable code used to specify a medical diagnosis of stage 3 necrotizing enterocolitis. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:K55.33
Short Description:Stage 3 necrotizing enterocolitis
Long Description:Stage 3 necrotizing enterocolitis

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code K55.33:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Necrotizing enterocolitis with perforation
  • Necrotizing enterocolitis with pneumatosis and perforation

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code K55.33 are found in the index:


Diagnostic Related Groups

The ICD-10 code K55.33 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 393 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH MCC
  • 394 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC
  • 395 - OTHER DIGESTIVE SYSTEM DIAGNOSES WITHOUT CC/MCC

Replacement Code

K5533 replaces the following previously assigned ICD-10 code(s):

  • K55.8 - Other vascular disorders of intestine

Convert K55.33 to ICD-9

  • 557.0 - Ac vasc insuff intestine (Approximate Flag)

Code Classification

  • Diseases of the digestive system (K00–K93)
    • Other diseases of intestines (K55-K64)
      • Vascular disorders of intestine (K55)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020