Angiodysplasia of colon with hemorrhage

This code signifies the presence of abnormal, fragile blood vessels (angiodysplasia) within the colon that are actively bleeding. This vascular malformation can lead to recurrent or chronic gastrointestinal blood loss.

Assign this code when documentation explicitly states angiodysplasia of the colon and confirms active hemorrhage, such as melena, hematochezia, or a positive fecal occult blood test with an identified bleeding source. This diagnosis is often made via colonoscopy or angiography.

• Ensure documentation specifies both "angiodysplasia" and "hemorrhage" of the colon.
• Do not use this code for angiodysplasia without active bleeding; use K55.20 for angiodysplasia of the colon without hemorrhage.
• Consider sequencing this code as the principal diagnosis if it is the primary reason for the encounter and treatment.