ICD-10 Code C81.40 – Lymphocyte-rich Hodgkin lymphoma, unspecified site (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C81.40 – Lymphocyte-rich Hodgkin lymphoma, unspecified site
What it is
C81.40 identifies lymphocyte-rich Hodgkin lymphoma when the site is not specified. Use it for a documented Hodgkin lymphoma subtype with abundant lymphocytes and no stated anatomic location.
Clinical signs
Clinical features vary; refer to documentation. Hodgkin lymphoma commonly presents with lymph node enlargement, and diagnosis is confirmed by pathology showing the lymphocyte-rich subtype.
When to use this code
Use this code when the provider documents lymphocyte-rich Hodgkin lymphoma but does not name a nodal or extranodal site. It also fits when the record confirms the subtype and laterality or location is not available.
If the chart later specifies a site, code to the more specific lymphoma code instead. Check documentation for whether the diagnosis is current, historical, or being ruled out.
Do not use for
Do not use this code for other Hodgkin lymphoma subtypes or for non-Hodgkin lymphomas. Do not assign it when the site is documented and a more specific code is available.
Coding tip
Verify both the subtype and the absence of a specified site before coding C81.40.