ICD-10 Code C82.26 – Follicular lymphoma grade III, unspecified, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.26 – Follicular lymphoma grade III, unspecified, intrapelvic lymph nodes
What it is
This code identifies follicular lymphoma, grade III, involving intrapelvic lymph nodes, when the subtype is not further specified. Use it for a documented malignant B-cell lymphoma in pelvic lymph nodes.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma may present with painless lymph node enlargement, often found on imaging or exam, and pathology confirming grade III disease.
When to use this code
Use this code when the provider documents follicular lymphoma grade III in intrapelvic lymph nodes and does not specify a more precise subtype. It also fits when pathology or oncology notes confirm pelvic nodal involvement. If the record names a different nodal region or a more specific follicular lymphoma type, check documentation.
Do not use for
Do not use this code for follicular lymphoma at other nodal sites or for grades other than III. Do not use it when the documentation only says “lymphoma” without confirming follicular type and pelvic node involvement.
Coding tip
Confirm both the lymphoma grade and the intrapelvic nodal location in the pathology or oncology note before assigning C82.26.