Billable / Specific Code
ICD-10-CM K58.9 is the diagnosis code for Irritable bowel syndrome, unspecified. This code falls under the section "Other diseases of intestines" within Chapter 11 — Diseases of the digestive system (K00-K95). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where K58.9 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K58.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K58.9 is the ICD-10-CM diagnosis code for "Irritable bowel syndrome, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of K58.9 is K58 ("Irritable bowel syndrome"). K58.9 provides a more specific classification within this category.
K58.9 is located in Section K55-K64 — "Other diseases of intestines" within Chapter 11 of the ICD-10-CM Tabular List.
Use K58.9 when the patients documented diagnosis matches "Irritable bowel syndrome, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Irritable bowel syndrome, unspecified is K58.9.
Yes, K58.9 can be used as a primary diagnosis code since it is billable and specific.
K58.9 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K58.9 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.