ICD-10 Code C82.17 – Follicular lymphoma grade II, spleen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.17 – Follicular lymphoma grade II, spleen
What it is
C82.17 identifies follicular lymphoma, grade II, involving the spleen. It is a malignant B-cell non-Hodgkin lymphoma documented as affecting splenic tissue.
Clinical signs
Clinical features vary; refer to documentation. Splenic involvement may be noted with an enlarged spleen, abdominal fullness, or imaging and pathology findings consistent with follicular lymphoma.
When to use this code
Use this code when the provider documents follicular lymphoma grade II with splenic involvement as the site of disease. It fits cases where the spleen is specifically named in the diagnosis or pathology report. If the record only states follicular lymphoma without site, check documentation.
Do not use for
Do not use C82.17 for other lymphoma grades, unspecified follicular lymphoma, or lymphoma involving a different site. If the spleen is not clearly documented as involved, code the condition as documented.
Coding tip
Verify both the grade and the splenic site in the final provider diagnosis before assigning C82.17.