Code Information

Diagnosis Code: 555.1

Short Description: Reg enteritis, lg intest

Long Description: Regional enteritis of large intestine

Code Classification:

  • Diseases of the digestive system (520–579)
    • Noninfective enteritis and colitis (555-558)
      • 555 Regional enteritis
        • 555.1 Reg enteritis, lg intest

Code Version: 2015 ICD-9-CM

References to Index of Diseases and Injuries

The code 555.1 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
    • granulomatous 555.1
    • regional 555.1
    • segmental 555.1
    • transmural 555.1
  • Enteritis (acute) (catarrhal) (choleraic) (chronic) (congestive) (diarrheal) (exudative) (follicular) (hemorrhagic) (infantile) (lienteric) (noninfectious) (perforative) (phlegmonous) (presumed noninfectious) (pseudomembranous) 558.9
    • regional (of) 555.9
      • intestine
        • large (bowel, colon, or rectum) 555.1
          • with small intestine 555.2
  • Inflammation, inflamed, inflammatory (with exudation)
    • colon (see also Enteritis) 558.9
      • granulomatous 555.1
  • Proctitis 569.49
    • granulomatous 555.1

Crosswalk Information

The code 555.1 converts into the following ICD-10 code(s):
ICD-9 Code ICD-10 Code ICD-10 Description
555.1 Right Arrow K50.10 Crohn's disease of large intestine without complications
This ICD-9 to ICD-10 data is based on the 2015 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

No. ICD-9 Code ICD-9 Description
1 555.0 Regional enteritis of small intestine
2 555.2 Regional enteritis of small intestine with large intestine
3 555.9 Regional enteritis of unspecified site

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