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K59.3 - Megacolon, not elsewhere classified


The ICD 10 Code for Megacolon, not elsewhere classified is listed as K59.3.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: K59.3
Description: Megacolon, not elsewhere classified
  • Dilatation of colon
  • Toxic megacolon
  • Code first (T51-T65) to identify toxic agent
  • Excludes1: congenital megacolon (aganglionic) (Q43.1)
  • megacolon (due to) (in) Chagas' disease (B57.32)
  • megacolon (due to) (in) Clostridium difficile (A04.7)
  • megacolon (due to) (in) Hirschsprung's disease (Q43.1)
Diagnostic Related Groups
(MS-DRG v30.0)
393 - Other Digestive System Diagnoses W Mcc
394 - Other Digestive System Diagnoses W Cc
395 - Other Digestive System Diagnoses W/o Cc/mcc
Chapter Diseases of the digestive system (K00-K95)
Block Other diseases of intestines (K55-K64)
Parent K59 - Other functional intestinal disorders
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 564.7 - Megacolon, other than Hirschsprung's
ICD-10-CM Siblings (same level / similar specificity) of K59.3:
K59.0 - Constipation
K59.1 - Functional diarrhea
K59.2 - Neurogenic bowel, not elsewhere classified
K59.4 - Anal spasm
K59.8 - Other specified functional intestinal disorders
K59.9 - Functional intestinal disorder, unspecified