ICD-10 Code C82.16 – Follicular lymphoma grade II, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.16 – Follicular lymphoma grade II, intrapelvic lymph nodes
What it is
C82.16 identifies follicular lymphoma, grade II, involving the intrapelvic lymph nodes. Use it when documentation specifies this lymphoma subtype and pelvic nodal location.
Clinical signs
Clinical features vary; refer to documentation. Follicular lymphoma is typically a slow-growing non-Hodgkin lymphoma, and diagnosis is usually based on pathology and nodal involvement.
When to use this code
Use this code when the record clearly states follicular lymphoma grade II and names intrapelvic lymph nodes as the site. It fits confirmed diagnoses, not just suspected disease. If the note identifies a different nodal region or grade, choose the more specific documented code.
Do not use for
Do not use it for follicular lymphoma in another lymph node region or for a different grade. Check documentation if the site is unspecified or if the diagnosis is not confirmed.
Coding tip
Match both the lymphoma grade and the exact nodal location before assigning C82.16.