ICD-10 Code C81.15 – Nodular sclerosis Hodgkin lymphoma, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C81.15 – Nodular sclerosis Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
What it is
This code identifies nodular sclerosis Hodgkin lymphoma involving lymph nodes in the inguinal region or lower limb. Use it when the documented subtype and nodal site match this exact diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Hodgkin lymphoma commonly presents with enlarged lymph nodes, sometimes with constitutional symptoms such as fever, night sweats, or weight loss.
When to use this code
Use C81.15 when the record specifically states nodular sclerosis Hodgkin lymphoma and names inguinal or lower-limb lymph nodes as the involved site. It may appear in pathology, oncology, or discharge documentation. If the subtype or nodal location is not explicit, check documentation.
Do not use for
Do not use this code for other Hodgkin lymphoma subtypes or for lymphoma in different lymph node regions. If the site is unspecified or the diagnosis is uncertain, check documentation.
Coding tip
Match both the histologic subtype and the anatomic nodal site before assigning C81.15.