K55.031

Billable

Focal (segmental) acute (reversible) ischemia of large intestine

HCC Category Mapping

V24HCC 107 — Vascular Disease with Complications

0.450

ESRDHCC 107 — Vascular Disease with Complications

0.000

What This Code Means

Reduced blood flow to a specific segment of the large intestine that is reversible and does not result in tissue death.

Coding Tips

•Distinguish between small intestine (K55.01x) and large intestine (K55.03x) involvement
•Confirm reversibility; if tissue death occurs, use K55.04x codes instead

Clinical Significance

Focal acute reversible ischemia of large intestine indicates significant colonic vascular compromise requiring immediate evaluation and treatment. This condition represents high-risk vascular disease with potential for progression to colonic infarction if untreated promptly.

Documentation Requirements

✓Acute abdominal pain and symptoms
✓Imaging confirmation of segmental large bowel ischemia
✓Documentation of focal/segmental involvement
✓Reversible nature of ischemic changes confirmed
✓Absence of colonic necrosis or infarction
✓Underlying vascular risk factors identified
✓Treatment response and monitoring plan

Commonly Confused Codes

K55.041 — Focal acute infarction when tissue necrosis present K55.032 — Diffuse ischemia when multiple segments involved K55.039 — Unspecified extent when focal pattern documented K55.1 — Chronic vascular disorders for established chronic changes

Code Hierarchy

└K55Vascular disorders of intestine └K55.0Acute vascular disorders of intestine └K55.03Acute (reversible) ischemia of large intestine └K55.031Focal (segmental) acute (reversible) ischemia of large intestine

└K55.031Focal (segmental) acute (reversible) ischemia of large intestine