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ICD-10-CM Codes
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K00-K95
Diseases of the digestive system
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K55-K64
Other diseases of intestines
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K55-
Vascular disorders of intestine
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2021 ICD-10-CM Diagnosis Code K55.1
2021 ICD-10-CM Diagnosis Code K55.1
Chronic vascular disorders of intestine
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- K55.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM K55.1 became effective on October 1, 2020.
- This is the American ICD-10-CM version of K55.1 - other international versions of ICD-10 K55.1 may differ.
Applicable To- Chronic ischemic colitis
- Chronic ischemic enteritis
- Chronic ischemic enterocolitis
- Ischemic stricture of intestine
- Mesenteric atherosclerosis
- Mesenteric vascular insufficiency
The following code(s) above
K55.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
K55.1:
Approximate Synonyms
- Atherosclerotic disease of superior mesenteric artery
- Chronic ischemic colitis
- Chronic ischemic enteritis
- Chronic ischemic enterocolitis
- Chronic mesenteric ischemia
- Chronic thrombosis of mesenteric vein
- Chronic vascular insufficiency of intestine
- Ischemic colitis, chronic
- Ischemic enteritis, chronic
- Ischemic enterocolitis, chronic
- Ischemic stricture of intestine
- Ischemic stricture, intestine
- Mesenteric vein thrombosis, chronic
- Occlusion of superior mesenteric artery
- Superior mesenteric artery syndrome
- Vascular insufficiency of intestine, chronic
ICD-10-CM K55.1 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
- 393 Other digestive system diagnoses with mcc
- 394 Other digestive system diagnoses with cc
- 395 Other digestive system diagnoses without cc/mcc
Convert K55.1 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
Code annotations containing back-references to K55.1:
- Abdomen, abdominal - see also condition
- Angina (attack) (cardiac) (chest) (heart) (pectoris) (syndrome) (vasomotor) I20.9
ICD-10-CM Diagnosis Code I20.9
Angina pectoris, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Angina NOS
- Anginal syndrome
- Cardiac angina
- Ischemic chest pain
- abdominal K55.1
- intestinal K55.1
- mesenteric K55.1
- Arteriosclerosis, arteriosclerotic (diffuse) (obliterans) (of) (senile) (with calcification) I70.90
ICD-10-CM Diagnosis Code I70.90
Unspecified atherosclerosis
2016 2017 2018 2019 2020 2021 Billable/Specific Code Adult Dx (15-124 years)
- mesenteric K55.1 (artery)
- Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) K52.9 - see also Enteritis
ICD-10-CM Diagnosis Code K52.9
Noninfective gastroenteritis and colitis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Colitis NOS
- Enteritis NOS
- Gastroenteritis NOS
- Ileitis NOS
- Jejunitis NOS
- Sigmoiditis NOS
Type 1 Excludes- diarrhea NOS (R19.7)
- functional diarrhea (K59.1)
- infectious gastroenteritis and colitis NOS (A09)
- neonatal diarrhea (noninfective) (P78.3)
- psychogenic diarrhea (F45.8)
- ischemic K55.9
ICD-10-CM Diagnosis Code K55.9
Vascular disorder of intestine, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ischemic colitis
- Ischemic enteritis
- Ischemic enterocolitis
- chronic K55.1
- due to mesenteric artery insufficiency K55.1
- Disease, diseased - see also Syndrome
- Disorder (of) - see also Disease
- intestine, intestinal
- vascular K55.9
ICD-10-CM Diagnosis Code K55.9
Vascular disorder of intestine, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ischemic colitis
- Ischemic enteritis
- Ischemic enterocolitis
- Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) K52.9
ICD-10-CM Diagnosis Code K52.9
Noninfective gastroenteritis and colitis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Colitis NOS
- Enteritis NOS
- Gastroenteritis NOS
- Ileitis NOS
- Jejunitis NOS
- Sigmoiditis NOS
Type 1 Excludes- diarrhea NOS (R19.7)
- functional diarrhea (K59.1)
- infectious gastroenteritis and colitis NOS (A09)
- neonatal diarrhea (noninfective) (P78.3)
- psychogenic diarrhea (F45.8)
- ischemic K55.9
ICD-10-CM Diagnosis Code K55.9
Vascular disorder of intestine, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ischemic colitis
- Ischemic enteritis
- Ischemic enterocolitis
- Enterocolitis K52.9 - see also Enteritis
ICD-10-CM Diagnosis Code K52.9
Noninfective gastroenteritis and colitis, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Colitis NOS
- Enteritis NOS
- Gastroenteritis NOS
- Ileitis NOS
- Jejunitis NOS
- Sigmoiditis NOS
Type 1 Excludes- diarrhea NOS (R19.7)
- functional diarrhea (K59.1)
- infectious gastroenteritis and colitis NOS (A09)
- neonatal diarrhea (noninfective) (P78.3)
- psychogenic diarrhea (F45.8)
- hemorrhagic (acute) K55.059 - see also Ischemia, intestine, acute
ICD-10-CM Diagnosis Code K55.059
Acute (reversible) ischemia of intestine, part and extent unspecified
2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
- Insufficiency, insufficient
- arterial I77.1
ICD-10-CM Diagnosis Code I77.1
Stricture of artery
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- vascular I99.8
ICD-10-CM Diagnosis Code I99.8
Other disorder of circulatory system
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- mesenteric K55.1
- Ischemia, ischemic I99.8
ICD-10-CM Diagnosis Code I99.8
Other disorder of circulatory system
2016 2017 2018 2019 2020 2021 Billable/Specific Code
- bowel (transient)
- chronic K55.1
- due to mesenteric artery insufficiency K55.1
- intestine (large) (small) (transient) K55.9
ICD-10-CM Diagnosis Code K55.9
Vascular disorder of intestine, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ischemic colitis
- Ischemic enteritis
- Ischemic enterocolitis
- chronic K55.1
- due to mesenteric artery insufficiency K55.1
- small bowel
- chronic K55.1
- due to mesenteric artery insufficiency K55.1
- colon chronic K55.1 (due to mesenteric artery insufficiency)
- Stricture - see also Stenosis
- Syndrome - see also Disease
- ischemic
- bowel (transient) K55.9
ICD-10-CM Diagnosis Code K55.9
Vascular disorder of intestine, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code
Applicable To- Ischemic colitis
- Ischemic enteritis
- Ischemic enterocolitis
- chronic K55.1
- due to mesenteric artery insufficiency K55.1
- mesenteric
- artery K55.1 (superior)
- vascular insufficiency K55.1
- superior
- Wilkie's K55.1
- Wilkie's disease or syndrome K55.1
ICD-10-CM Codes Adjacent To K55.1
K55.042 Diffuse acute infarction of large intestine
K55.05 Acute (reversible) ischemia of intestine, part unspecified
K55.051 Focal (segmental) acute (reversible) ischemia of intestine, part unspecified
K55.052 Diffuse acute (reversible) ischemia of intestine, part unspecified
K55.059 Acute (reversible) ischemia of intestine, part and extent unspecified
K55.06 Acute infarction of intestine, part unspecified
K55.061 Focal (segmental) acute infarction of intestine, part unspecified
K55.062 Diffuse acute infarction of intestine, part unspecified
K55.069 Acute infarction of intestine, part and extent unspecified
K55.1
Chronic vascular disorders of intestine
K55.2 Angiodysplasia of colon
K55.3 Necrotizing enterocolitis
K55.31 Stage 1 necrotizing enterocolitis
K55.32 Stage 2 necrotizing enterocolitis
K55.33 Stage 3 necrotizing enterocolitis
K55.8 Other vascular disorders of intestine
K55.9 Vascular disorder of intestine, unspecified
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.