ICD-10 Code C82.66 – Cutaneous follicle center lymphoma, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C82.66 – Cutaneous follicle center lymphoma, intrapelvic lymph nodes
What it is
This code identifies cutaneous follicle center lymphoma involving intrapelvic lymph nodes. Use it when documentation states this specific lymphoma subtype and nodal location.
Clinical signs
Clinical features vary; refer to documentation. Typical records may note a follicular lymphoma pattern with skin involvement and confirmation of intrapelvic lymph node disease.
When to use this code
Use this code when the clinician documents cutaneous follicle center lymphoma and specifies intrapelvic lymph nodes as the site. It may appear in pathology, oncology, or problem-list documentation. Check the record for site confirmation before assigning the code.
Do not use for
Do not use this code for cutaneous follicle center lymphoma in other nodal regions or for nonspecific lymphoma without documented intrapelvic involvement. Check documentation if the anatomical site is unclear.
Coding tip
Verify both the lymphoma subtype and the intrapelvic nodal site before coding; if either is missing, query the provider.