Acute (reversible) ischemia of small intestine

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2017 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

K55.011 Focal (segmental) acute (reversible) ischemia of small intestine
K55.012 Diffuse acute (reversible) ischemia of small intestine
K55.019 Acute (reversible) ischemia of small intestine, extent unspecified

What has happened to this code

Every change the publisher made, from 2017 to now.

FY2017 Added to the code set Acute (reversible) ischemia of small intestine

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from K55 Vascular disorders of intestine

Excludes1 - never coded here

necrotizing enterocolitis of newborn (P77.-)

Excludes2 - not included here

angioectasia (angiodysplasia) duodenum (K31.81-)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Thrombosis, thrombotic > mesenteric > vein

Codes in the same group

Code	Description	Status
K55.02	Acute infarction of small intestine	Not billable
K55.03	Acute (reversible) ischemia of large intestine	Not billable
K55.04	Acute infarction of large intestine	Not billable
K55.05	Acute (reversible) ischemia of intestine, part unspecified	Not billable
K55.06	Acute infarction of intestine, part unspecified	Not billable