IBS (Irritable Bowel Syndrome) ICD-10-CM Codes

IBS (Irritable Bowel Syndrome) ICD-10-CM Codes

Learn about the different IBS ICD-10 codes you can use through this guide.

By Matt Olivares on Aug 8, 2025.

Fact Checked by Gale Alagos.

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What ICD codes are used for IBS?

When addressing IBS (irritable bowel syndrome), it's essential to be familiar with the specific IBS ICD codes for accurate clinical documentation and billing. Irritable bowel syndrome (IBS) is a common gastrointestinal disorder characterized by abdominal pain, bloating, and changes in bowel habits. Here are some commonly used ICD codes related to this condition:

  • K58.9 - Irritable bowel syndrome, unspecified: This is meant to be used if a patient is confirmed to have irritable bowel syndrome. What's unspecified is the specific type. Once you've determined the specific type, please use any of the more specific codes below.
  • K58.0 - Irritable bowel syndrome with diarrhea: This is meant to be used if a patient is confirmed to have irritable bowel syndrome accompanied by diarrhea.
  • K58.1 - Irritable bowel syndrome with constipation: This is meant to be used if a patient is confirmed to have irritable bowel syndrome accompanied by constipation.
  • K58.2 - Mixed irritable bowel syndrome: This is meant to be used if a patient is confirmed to have irritable bowel syndrome accompanied by other digestive disorders.
  • K58.8 - Other irritable bowel syndrome: This is meant to be used if a patient is confirmed to have irritable bowel syndrome, but the kind of IBS doesn't have a specific ICD code.

Using the right codes ensures that patients receive the appropriate care and that healthcare providers are reimbursed accurately.

Which IBS ICD codes are billable?

All of the aforementioned ICD-10 codes are valid and billable.

Clinical information

IBS has specific clinical characteristics:

  • It's a chronic condition that affects the large intestine.
  • Symptoms can vary but often include abdominal pain, bloating, gas, and diarrhea or constipation.
  • The exact cause of IBS is unknown, but it can be related to factors like muscle contractions in the intestine, nervous system abnormalities, inflammation, and bacterial changes.
  • Treatment often involves dietary changes, medications, and stress management.
  • While IBS can be uncomfortable, it doesn't lead to severe complications or increase the risk of colorectal cancer.

Synonyms include

  • Spastic colon
  • Irritable colon
  • Mucous colitis
  • Functional bowel disorder
  • IBS-D (if diarrhea is predominant)
  • IBS with recurrent abdominal pain
  • IBS with recurrent colonic symptoms
  • IBS with other diseases of the digestive system
  • IBS causes erratic disturbance

Popular search terms for IBS (irritable bowel syndrome) ICD-10 codes

  • IBS ICD-10 code
  • ICD-10 IBS
  • IBS diagnosis codes
  • ICD-10 codes for IBS

Commonly asked questions

Foods, stress, hormonal changes, and certain medications can trigger IBS symptoms. Typical food triggers include dairy, carbonated drinks, and certain vegetables.

IBS is often diagnosed based on symptoms, but doctors may conduct tests to rule out other conditions. This can include blood tests, stool tests, and imaging tests.

While there's no cure for IBS, treatments can manage symptoms effectively. Dietary changes, medications, and other therapies can help improve the quality of life for individuals with IBS.

Related ICDs

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