2021 ICD-10-CM Code K59

Other functional intestinal disorders

Version 2021

Not Valid for Submission

K59 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other functional intestinal disorders. The code is not specific and is NOT valid for the year 2021 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.

ICD-10:K59
Short Description:Other functional intestinal disorders
Long Description:Other functional intestinal disorders

Code Classification

Specific Coding for Other functional intestinal disorders

Non-specific codes like K59 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 other functional intestinal disorders:

  • NON-BILLABLE CODE - K59.0 for Constipation
  • BILLABLE CODE - Use K59.00 for Constipation, unspecified
  • BILLABLE CODE - Use K59.01 for Slow transit constipation
  • BILLABLE CODE - Use K59.02 for Outlet dysfunction constipation
  • BILLABLE CODE - Use K59.03 for Drug induced constipation
  • BILLABLE CODE - Use K59.04 for Chronic idiopathic constipation
  • BILLABLE CODE - Use K59.09 for Other constipation
  • BILLABLE CODE - Use K59.1 for Functional diarrhea
  • BILLABLE CODE - Use K59.2 for Neurogenic bowel, not elsewhere classified
  • NON-BILLABLE CODE - K59.3 for Megacolon, not elsewhere classified
  • BILLABLE CODE - Use K59.31 for Toxic megacolon
  • BILLABLE CODE - Use K59.39 for Other megacolon
  • BILLABLE CODE - Use K59.4 for Anal spasm
  • NON-BILLABLE CODE - K59.8 for Other specified functional intestinal disorders
  • BILLABLE CODE - Use K59.81 for Ogilvie syndrome
  • BILLABLE CODE - Use K59.89 for Other specified functional intestinal disorders
  • BILLABLE CODE - Use K59.9 for Functional intestinal disorder, 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 K59:


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.

Type 2 Excludes

Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

Information for Patients


Digestive Diseases

Also called: Gastrointestinal 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


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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)