Megacolon, not elsewhere classified K59.3

The ICD10 code for the diagnosis "Megacolon, not elsewhere classified" is "K59.3". K59.3 is NOT a 'valid' or 'billable' ICD10 code. Please select a more specific diagnosis below.

  • K59.3 should not be used for reimbursement purposes. Please select a more specific diagnosis below.
  • The 2019 edition of ICD-10-CM K59.3 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of K59.3 - other international versions of ICD-10 K59.3 may differ.
Applicable To:
  • Dilatation of colon
Code First:
  • , if applicable (T51-T65) to identify toxic agent
Type 1 Excludes:
  • 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)

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.