ICD-10 Code C81.45 – Lymphocyte-rich Hodgkin lymphoma, lymph nodes of inguinal region and lower limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C81.45 – Lymphocyte-rich Hodgkin lymphoma, lymph nodes of inguinal region and lower limb
What it is
This code identifies lymphocyte-rich Hodgkin lymphoma affecting lymph nodes in the inguinal region and lower limb. It specifies both the Hodgkin subtype and the anatomic site, so you should use it only when documentation supports both.
Clinical signs
Patients may present with enlarged lymph nodes in the groin or lower extremity regions, sometimes with other findings of Hodgkin lymphoma. Clinical features vary; refer to documentation and pathology confirmation when available.
When to use this code
Use this code when the provider documents lymphocyte-rich Hodgkin lymphoma and clearly identifies the involved lymph nodes as inguinal region or lower limb. It is appropriate for confirmed diagnoses, including pathology-supported reports and oncology follow-up notes. Check documentation if the site is described only generally.
Do not use for
Do not use this code for other Hodgkin lymphoma subtypes or for nonspecific lymph node enlargement without a confirmed lymphoma diagnosis. Do not assign it when the involved site is not documented as inguinal region or lower limb.
Coding tip
Match the histology and nodal location exactly; if either detail is missing, check documentation before coding.