ICD-10 Code C86.20 – Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C86.20 – Enteropathy-type (intestinal) T-cell lymphoma not having achieved remission
What it is
This code identifies enteropathy-type intestinal T-cell lymphoma that is documented as not having achieved remission. It applies when the malignancy is still active or persistent after treatment.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe a rare intestinal lymphoma associated with symptoms such as abdominal pain, diarrhea, weight loss, or bowel complications.
When to use this code
Use this code when the record specifically states enteropathy-type intestinal T-cell lymphoma and notes no remission, persistent disease, or active malignancy. It is also appropriate when the provider documents the lymphoma as refractory or unchanged after therapy.
Do not assume remission status from treatment history alone. If the note does not clearly state non-remission, check documentation before assigning the code.
Do not use for
Do not use this code for lymphoma in remission, unspecified remission status, or a different T-cell lymphoma subtype. Check documentation if the site, histology, or remission status is unclear.
Coding tip
Confirm both the exact lymphoma type and the explicit “not in remission” wording before coding.