556.0 ULCERATIVE ENTEROCOLITIS


Code Information

Diagnosis Code: 556.0

Short Description: Ulcerative enterocolitis

Long Description: Ulcerative (chronic) enterocolitis

Code Classification:

  • Diseases of the digestive system (520–579)
    • Noninfective enteritis and colitis (555-558)
      • 556 Ulcerative colitis
        • 556.0 Ulcerative enterocolitis

Code Version: 2015 ICD-9-CM


References to Index of Diseases and Injuries

The code 556.0 has the following ICD-9-CM references to the Index of Diseases and Injuries
  • Colitis (acute) (catarrhal) (croupous) (cystica superficialis) (exudative) (hemorrhagic) (noninfectious) (phlegmonous) (presumed noninfectious) 558.9
    • ulcerative (chronic) (idiopathic) (nonspecific) 556.9
      • entero- 556.0
  • Enterocolitis - see also Enteritis
    • ulcerative 556.0
  • Ulcer, ulcerated, ulcerating, ulceration, ulcerative 707.9
    • enterocolitis 556.0

Crosswalk Information

The code 556.0 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
556.0 Right Arrow K51.80 Other ulcerative colitis without complications
This ICD-9 to ICD-10 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-9 Code ICD-9 Description
556.1 Ulcerative (chronic) ileocolitis
556.2 Ulcerative (chronic) proctitis
556.3 Ulcerative (chronic) proctosigmoiditis
556.4 Pseudopolyposis of colon
556.5 Left-sided ulcerative (chronic) colitis
556.6 Universal ulcerative (chronic) colitis
556.8 Other ulcerative colitis
556.9 Ulcerative colitis, unspecified


This page was last updated on: 10/1/2014