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K51 Ulcerative colitis

Part of Chapter 11: Diseases of the digestive system , block Noninfective enteritis and colitis (K50-K52) .

Official Notes

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code to identify any associated fistulas, if applicable:

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anal fistula ( K60.3- )

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anorectal fistula ( K60.5- )

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rectal fistula ( K60.4- )

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code to identify manifestations, such as:

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pyoderma gangrenosum ( L88 )

Excludes1

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

Child Codes

Referenced By

Official notes on these codes cite K51.

FY 2027 effective October 1, 2026 · CDC NCHS and CMS