ICD-10-CM > K00-K95 > K55-K64 > K55 > K55.0 > K55.01 K55.01 Acute (reversible) ischemia of small intestine Non-Billable/Non-Specific Codes K55.011Focal (segmental) acute (reversible) ischemia of small intestineK55.012Diffuse acute (reversible) ischemia of small intestineK55.019Acute (reversible) ischemia of small intestine, extent unspecified