ICD-10 Code C88.30 – Immunoproliferative Small Intestinal Disease Not Having Achieved Remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C88.30 – Immunoproliferative small intestinal disease not having achieved remission
What it is
This code identifies immunoproliferative small intestinal disease that is still active and has not reached remission. Use it when the record clearly states the condition and the patient is not in remission.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe a small intestinal disorder with abnormal lymphoid or plasma cell proliferation, often associated with chronic gastrointestinal symptoms and malabsorption.
When to use this code
Use C88.30 when the provider documents immunoproliferative small intestinal disease and specifically states it has not achieved remission. It also fits follow-up visits when the condition remains active. If remission status is unclear, check documentation before coding.
Do not use for
Do not use this code for suspected disease, history only, or cases documented as in remission. Do not apply it to other intestinal lymphomas or plasma cell disorders unless the provider names this diagnosis.
Coding tip
Confirm both the exact diagnosis and the non-remission status in the assessment or problem list before assigning C88.30.