2020 ICD-10-CM Diagnosis Code K55.01

Acute (reversible) ischemia of small intestine

    2017 - New Code 2018 2019 2020 Non-Billable/Non-Specific Code
  • K55.01 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM K55.01 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K55.01 - other international versions of ICD-10 K55.01 may differ.
The following code(s) above K55.01 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 K55.01:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • 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)
    Diseases of the digestive system
  • K55
    ICD-10-CM Diagnosis Code K55

    Vascular disorders of intestine

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • necrotizing enterocolitis of newborn (P77.-)
    Vascular disorders of intestine
  • K55.0
    ICD-10-CM Diagnosis Code K55.0

    Acute vascular disorders of intestine

      2016 2017 - Converted to Parent Code 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Infarction of appendices epiploicae
    • Mesenteric (artery) (vein) embolism
    • Mesenteric (artery) (vein) infarction
    • Mesenteric (artery) (vein) thrombosis
    Acute vascular disorders of intestine
Code History
  • 2017 (effective 10/1/2016): New code
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To K55.01
K52.82 Eosinophilic colitis
K52.83 Microscopic colitis
K52.831 Collagenous colitis
K52.832 Lymphocytic colitis
K52.838 Other microscopic colitis
K52.839 …… unspecified
K52.89 Other specified noninfective gastroenteritis and colitis
K52.9 Noninfective gastroenteritis and colitis, unspecified
K55 Vascular disorders of intestine
K55.0 Acute vascular disorders of intestine
K55.01 Acute (reversible) ischemia of small intestine
K55.011 Focal (segmental) acute (reversible) ischemia of small intestine
K55.012 Diffuse acute (reversible) ischemia of small intestine
K55.019 …… extent unspecified
K55.02 Acute infarction of small intestine
K55.021 Focal (segmental) acute infarction of small intestine
K55.022 Diffuse acute infarction of small intestine
K55.029 …… extent unspecified
K55.03 Acute (reversible) ischemia of large intestine
K55.031 Focal (segmental) acute (reversible) ischemia of large intestine
K55.032 Diffuse acute (reversible) ischemia of large intestine

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.