Irritable bowel syndrome (K58)
ICD-10 code K58 and its subcategories identify different forms of irritable bowel syndrome (IBS), a common gastrointestinal disorder characterized by abdominal discomfort and altered bowel habits. These codes help specify whether IBS manifests with diarrhea, constipation, a mix of symptoms, or is unspecified.
The ICD-10 code for irritable bowel syndrome (K58) covers the general diagnosis. More precise coding includes K58.0 for IBS with diarrhea, capturing terms like “irritable bowel syndrome with diarrhea” and childhood variants. K58.1 denotes IBS with constipation, while K58.2 describes mixed IBS, involving both diarrhea and constipation symptoms. K58.8 is used for other specified IBS types. Finally, K58.9 codes unspecified IBS, which includes related terms such as “colonospasm,” “bowel spasm,” and “enterospasm.” These distinctions assist healthcare providers and coders in accurately documenting IBS cases based on symptom patterns, supporting clearer treatment plans and statistical tracking.
Instructional Notations
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- irritable colon
- spastic colon
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Irritable Bowel Syndrome
A disorder with chronic or recurrent colonic symptoms without a clearcut etiology. This condition is characterized by chronic or recurrent ABDOMINAL PAIN, bloating, MUCUS in FECES, and an erratic disturbance of DEFECATION.
