ICD-10 Diagnosis Code K59.00

Constipation, unspecified

Diagnosis Code K59.00

ICD-10: K59.00
Short Description: Constipation, unspecified
Long Description: Constipation, unspecified
This is the 2018 version of the ICD-10-CM diagnosis code K59.00

Valid for Submission
The code K59.00 is valid for submission for HIPAA-covered transactions.

Replaced Code Additional informationCallout TooltipReplaced Code
The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2017. This codes was replaced for the FY 2018 (October 1, 2017-September 30, 2018).

This code was replaced in the 2018 ICD-10 code set with the code(s) listed below.
  • K58.1 - Irritable bowel syndrome with constipation

Code Classification
  • Diseases of the digestive system (K00–K93)
    • Other diseases of intestines (K55-K64)
      • Other functional intestinal disorders (K59)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code K59.00 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Acute constipation
  • Alteration in bowel elimination
  • Alteration in bowel elimination: constipation
  • Chronic constipation
  • Chronic constipation without overflow
  • Constipation
  • Constipation alternates with diarrhea
  • Constipation due to atony of colon
  • Constipation due to neurogenic bowel
  • Constipation due to spasm of colon
  • Defecation reflex abnormal - constipated
  • Defecation reflex finding
  • Defecation reflex finding
  • Drug-induced constipation
  • Encopresis with constipation AND overflow incontinence
  • Obstipation
  • On examination - defecation reflex
  • On examination - defecation reflex abnormal - constipated
  • Perceived constipation
  • Simple constipation
  • Therapeutic opioid induced constipation

Information for Patients


Constipation means that a person has three or fewer bowel movements in a week. The stool can be hard and dry. Sometimes it is painful to pass. At one time or another, almost everyone gets constipated. In most cases, it lasts a short time and is not serious.

There are many things you can do to prevent constipation. They include

  • Eating more fruits, vegetables and grains, which are high in fiber
  • Drinking plenty of water and other liquids
  • Getting enough exercise
  • Taking time to have a bowel movement when you need to
  • Using laxatives only if your doctor says you should
  • Asking your doctor if medicines you take may cause constipation

It's not important that you have a bowel movement every day. If your bowel habits change, however, check with your doctor.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

  • Constipation (Medical Encyclopedia)
  • Constipation - self-care (Medical Encyclopedia)
  • Fecal impaction (Medical Encyclopedia)
  • Lower GI Series - NIH (National Institute of Diabetes and Digestive and Kidney Diseases)
  • Tenesmus (Medical Encyclopedia)

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