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K51.214 vs K63.0

K51.214 (Ulcerative (chronic) proctitis with abscess) compared with K63.0 (Abscess of intestine), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Can these codes be reported together?

No — do not report together. K63.0 carries an Excludes1 note covering K51.214: “abscess of intestine with ulcerative colitis (K51.014, K51.214, K51.314, K51.414, K51.514, K51.814, K51.914)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

K51.214Ulcerative (chronic) proctitis with abscessK63.0Abscess of intestine
Billing statusBillableBillable
ClassificationK00-K95 — Diseases of the Digestive System (K00-K95)K00-K95 — Diseases of the Digestive System (K00-K95)
DefinitionUlcerative (chronic) proctitis with abscess is a billable ICD-10-CM diagnosis code (K51.214).Abscess of intestine is a billable ICD-10-CM diagnosis code (K63.0).
Includes
noninfective inflammatory bowel disease
Use additional code
code to identify any associated fistulas, if applicable:
anal fistula (K60.3-)
anorectal fistula (K60.5-)

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources