C85.95

HCC Category Mapping

What This Code Means

This code describes a type of cancer affecting the lymph nodes in the groin and leg area, but the specific subtype of non-Hodgkin lymphoma has not been identified or specified. It is used when a patient has non-Hodgkin lymphoma in the inguinal lymph nodes without further classification of the lymphoma type.

Coding Tips

• •Verify the pathology report to determine if a more specific non-Hodgkin lymphoma subtype (such as diffuse large B-cell, follicular, or marginal zone) can be documented, as this would allow for a more specific code assignment
• •Ensure the anatomical site is confirmed as inguinal region and/or lower limb lymph nodes; if lymph nodes in other regions are also involved, additional codes may be needed to capture all affected sites

Clinical Significance

Non-Hodgkin lymphoma of unspecified type involving inguinal and lower limb lymph nodes affects the groin and leg nodal chains. Inguinal lymphadenopathy may be incidentally discovered on physical examination or present with lower extremity swelling due to lymphatic obstruction. This location is relatively accessible for diagnostic biopsy but may indicate more advanced or widespread disease when combined with other sites.

Documentation Requirements

• ✓Provider must document inguinal or lower extremity lymph node involvement specifically.
• ✓Pathology should be queried for a more specific NHL subtype whenever possible.
• ✓Disease staging, treatment plan, current disease activity, and any associated lower extremity lymphedema must be documented.

Commonly Confused Codes