2025
ICD-10-CM
Diagnosis
Code

K51 Ulcerative colitis

Non-billable
2016–2025

K51 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Ulcerative colitis.

Use additional code

Code to identify any associated fistulas, if applicable:

Anal fistula (K60.3-)
Anorectal fistula (K60.5-)
Rectal fistula (K60.4-)

Type 1 excludes

Crohn's disease [regional enteritis] (K50.-)

Codes

Versions

2025
Code changed
- Use additional code
  ~~code to identify manifestations, such as:~~
  ~~pyoderma gangrenosum (L88)~~
  code to identify any associated fistulas, if applicable:
  anal fistula (K60.3-)
  anorectal fistula (K60.5-)
  rectal fistula (K60.4-)
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code