ICD-10-CM K59.31 is the diagnosis code for Toxic megacolon. 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.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where K59.31 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, K59.31 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
K59.31 is the ICD-10-CM diagnosis code for "Toxic megacolon". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of K59.31 is K59.3 ("Megacolon, not elsewhere classified"). K59.31 provides a more specific classification within this category.
K59.31 is located in Section K55-K64 — "Other diseases of intestines" within Chapter 11 of the ICD-10-CM Tabular List.
Use K59.31 when the patients documented diagnosis matches "Toxic megacolon" 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 Toxic megacolon is K59.31.
Yes, K59.31 can be used as a primary diagnosis code since it is billable and specific.
K59.31 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K59.31 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.