ICD-10 Code C82.47 – Follicular lymphoma grade IIIb, spleen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.47 – Follicular lymphoma grade IIIb, spleen
What it is
This code identifies follicular lymphoma, grade IIIb, involving the spleen. It is a specific malignant B-cell lymphoma diagnosis documented as affecting splenic tissue.
Clinical signs
Clinical features vary; refer to documentation. Splenic involvement may be noted on imaging, exam, or pathology, and the record should support follicular lymphoma grade IIIb with spleen involvement.
When to use this code
Use C82.47 when the provider documents follicular lymphoma grade IIIb in the spleen or confirms splenic involvement by pathology or imaging. Code it only when the record clearly specifies both the grade and the spleen as the site. Check documentation if the site is uncertain.
Do not use for
Do not use this code for other follicular lymphoma grades, unspecified follicular lymphoma, or lymphoma involving a different organ. If the spleen is not documented as involved, check documentation.
Coding tip
Verify the exact lymphoma grade and anatomic site in the pathology or oncology note before assigning C82.47.