K55.01
Acute (reversible) ischemia of small intestine
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
K55.01 is a non-billable ICD-10-CM code header for acute (reversible) ischemia of small intestine. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are K55.011 Focal (segmental) acute (reversible) ischemia of small intestine; K55.012 Diffuse acute (reversible) ischemia of small intestine and K55.019 Acute (reversible) ischemia of small intestine, extent unspecified. Its coding notes include 1 Excludes1 entry and 9 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
Inherited from Chapter 11 Diseases of the digestive system
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)