ICD-10 Code C88.31 – Immunoproliferative small intestinal disease, in remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C88.31 – Immunoproliferative small intestinal disease, in remission
What it is
C88.31 identifies immunoproliferative small intestinal disease that is documented as being in remission. Use it when the condition is no longer active, but the diagnosis remains clinically relevant.
Clinical signs
Clinical features vary; refer to documentation. Typical records may note prior small intestinal involvement, abnormal immune-cell proliferation, or a history of the disorder with current remission status.
When to use this code
Use this code when the provider clearly states immunoproliferative small intestinal disease is in remission. It is appropriate for follow-up visits, surveillance, or problem-list documentation when the condition is not currently active. If remission is not documented, check documentation before coding.
Do not use for
Do not use this code for active disease, suspected disease, or a history only statement without remission. Check documentation if the chart does not clearly distinguish current disease from past disease.
Coding tip
Code remission only when the provider explicitly documents it; otherwise, use the active-disease code or query for clarification.