ICD-10 Code C82.35 – Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.35 – Follicular lymphoma grade IIIa, lymph nodes of inguinal region and lower limb
What it is
This code identifies follicular lymphoma grade IIIa involving lymph nodes in the inguinal region or lower limb. Use it when the record specifies both the grade and the nodal location.
Clinical signs
Findings usually reflect lymphoma in regional lymph nodes, such as enlarged inguinal nodes or other lower-limb nodal involvement. Clinical features vary; refer to documentation.
When to use this code
Use C82.35 when the provider documents follicular lymphoma grade IIIa and names inguinal or lower-limb lymph nodes as the site. It is appropriate for confirmed diagnoses in outpatient, inpatient, or problem-list documentation. If the grade or site is not stated, check documentation before assigning this code.
Do not use for
Do not use this code for other follicular lymphoma grades or for nodal sites outside the inguinal region and lower limb. Check documentation if the record only says “lymphoma” or gives an unspecified lymph node site.
Coding tip
Match both the histologic grade and the exact nodal location before coding.