K55.0 ICD-10-CA code: Acute vascular disorders of intestine
K55.0 is the ICD-10-CA code for “Acute vascular disorders of intestine” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
K55.0Acute vascular disorders of intestine
ICD-10-CA · Canada · Also written K550
Index terms
Entries in CIHI’s alphabetical index that lead to K55.0. Searching the index by the condition the note names is how coders reach this code.
- Infarct, infarction (of), bowel
- Infarct, infarction (of), colon
- Enterocolitis, fulminant ischemic
- Infarct, infarction (of), omentum
- Enterocolitis, hemorrhagic (acute)
- Ischemia, ischemic, mesenteric, acute
- Necrosis, necrotic (ischemic), omentum
- Necrosis, necrotic (ischemic), mesentery
- Necrosis, necrotic (ischemic), peritoneum
- Embolism (septic), vein, mesenteric (with gangrene)
- Enteritis (diarrheal) (hemorrhagic), ischemic, acute
- Ischemia, ischemic, intestine (large) (small), acute
- Embolism (septic), artery, mesenteric (with gangrene)
- Occlusion, occluded, mesenteric artery (chronic), acute
- Occlusion, occluded, artery, mesenteric (chronic), acute
- Embolism (septic), intestine (artery) (vein) (with gangrene)
- Gangrene, gangrenous (dry) (moist) (skin) (ulcer), mesentery
- Embolism (septic), mesenteric (artery) (vein) (with gangrene)
- Insufficiency, insufficient, arterial, mesenteric (chronic), acute
- Insufficiency, insufficient, vascular, mesenteric (chronic), acute
- Disease, diseased, arterial, occlusive, mesenteric (chronic), acute
- Colitis (acute) (catarrhal) (hemorrhagic), ischemic, fulminant (acute)
- Infarct, infarction (of), mesentery, mesenteric (embolic) (thrombotic)
- Necrosis, necrotic (ischemic), intestine (acute) (hemorrhagic) (massive)
- Colitis (acute) (catarrhal) (hemorrhagic), ischemic, acute (fulminant) (subacute)
- Gangrene, gangrenous (dry) (moist) (skin) (ulcer), intestine, intestinal (hemorrhagic) (massive)
- Infarct, infarction (of), intestine (acute) (agnogenic) (hemorrhagic) (nonocclusive) (transmural)
- Thrombosis, thrombotic (multiple) (progressive) (septic) (vein) (vessel), omentum (with gangrene)
- Thrombosis, thrombotic (multiple) (progressive) (septic) (vein) (vessel), intestine (with gangrene)
- Thrombosis, thrombotic (multiple) (progressive) (septic) (vein) (vessel), mesenteric (artery) (with gangrene)
- Gangrene, gangrenous (dry) (moist) (skin) (ulcer), intestine, intestinal (hemorrhagic) (massive), with, mesenteric embolism
- Thrombosis, thrombotic (multiple) (progressive) (septic) (vein) (vessel), artery, arteries (postinfectional), mesenteric (with gangrene)
Notes for K55.0
As CIHI prints them, with any note K55.0 takes from the headings above it.
Includes
- Acute:• fulminant ischaemic colitis• intestinal infarction• small intestine ischaemiaMesenteric (artery)(vein):• embolism• infarction• thrombosisSubacute ischaemic colitis
Excludes
Conditions classified elsewhere.
- Necrotizing enterocolitis of fetus or newborn (P77)From K55 Vascular disorders of intestine
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 11: Diseases of the digestive system (K00-K93)
Where K55.0 sits
- 1ChapterChapter 11: Diseases of the digestive system (K00-K93)
- 2Block K55-K64Other diseases of intestines
- 3Category K55Vascular disorders of intestine
- 4Valid code K55.0Acute vascular disorders of intestine
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code K55.0 mean?
K55.0 is the ICD-10-CA code for “Acute vascular disorders of intestine” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is K55.0 in ICD-10-CA?
K55.0 sits under K55 Vascular disorders of intestine, within K55-K64 Other diseases of intestines, within Chapter 11: Diseases of the digestive system (K00-K93).
What coding notes apply to K55.0?
ICD-10-CA lists Includes, Excludes notes for K55.0, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.