2022 ICD-10-CM Code K55

Vascular disorders of intestine

Version 2021

Not Valid for Submission

ICD-10:K55
Short Description:Vascular disorders of intestine
Long Description:Vascular disorders of intestine

Code Classification

  • Diseases of the digestive system (K00–K93)
    • Other diseases of intestines (K55-K64)
      • Vascular disorders of intestine (K55)

K55 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of vascular disorders of intestine. The code is not specific and is NOT valid for the year 2022 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Vascular disorders of intestine

Non-specific codes like K55 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for vascular disorders of intestine:

  • NON-BILLABLE CODE - K55.0 for Acute vascular disorders of intestine
  • NON-BILLABLE CODE - K55.01 for Acute (reversible) ischemia of small intestine
  • NON-BILLABLE CODE - K55.02 for Acute infarction of small intestine
  • NON-BILLABLE CODE - K55.03 for Acute (reversible) ischemia of large intestine
  • NON-BILLABLE CODE - K55.04 for Acute infarction of large intestine
  • NON-BILLABLE CODE - K55.05 for Acute (reversible) ischemia of intestine, part unspecified
  • NON-BILLABLE CODE - K55.06 for Acute infarction of intestine, part unspecified
  • BILLABLE CODE - Use K55.1 for Chronic vascular disorders of intestine
  • NON-BILLABLE CODE - K55.2 for Angiodysplasia of colon
  • BILLABLE CODE - Use K55.20 for Angiodysplasia of colon without hemorrhage
  • BILLABLE CODE - Use K55.21 for Angiodysplasia of colon with hemorrhage
  • NON-BILLABLE CODE - K55.3 for Necrotizing enterocolitis
  • BILLABLE CODE - Use K55.30 for Necrotizing enterocolitis, unspecified
  • BILLABLE CODE - Use K55.31 for Stage 1 necrotizing enterocolitis
  • BILLABLE CODE - Use K55.32 for Stage 2 necrotizing enterocolitis
  • BILLABLE CODE - Use K55.33 for Stage 3 necrotizing enterocolitis
  • BILLABLE CODE - Use K55.8 for Other vascular disorders of intestine
  • BILLABLE CODE - Use K55.9 for Vascular disorder of intestine, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code K55:


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Information for Patients


Digestive Diseases

When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion.

Your digestive system is a series of hollow organs joined in a long, twisting tube. It runs from your mouth to your anus and includes your esophagus, stomach, and small and large intestines. Your liver, gallbladder and pancreas are also involved. They produce juices to help digestion.

There are many types of digestive disorders. The symptoms vary widely depending on the problem. In general, you should see your doctor if you have

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


[Learn More in MedlinePlus]

Vascular Diseases

What are vascular diseases?

Your vascular system is your body's network of blood vessels. It includes your

Vascular diseases are conditions which affect your vascular system. They are common and can be serious. Some types include

What causes vascular diseases?

The causes of vascular diseases depend on the specific disease. These causes include

Sometimes the cause is unknown.

Who is at risk for vascular diseases?

The risk factors for vascular diseases can vary, depending on the specific disease. But some of the more common risk factors include

What are the symptoms of vascular diseases?

The symptoms for each disease are different.

How are vascular diseases diagnosed?

To make a diagnosis, your health care provider will do a physical exam and ask about your symptoms and medical history. You may have imaging tests and/or blood tests.

How are vascular diseases treated?

Which treatment you get depends on which vascular disease you have and how severe it is. Types of treatments for vascular diseases include

Can vascular diseases be prevented?

There are steps you can take to help prevent vascular diseases:


[Learn More in MedlinePlus]

Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)