C81.94

HCC Category Mapping

What This Code Means

This code describes Hodgkin lymphoma (a type of cancer affecting lymph cells) that has spread to or is located in the lymph nodes of the armpit and upper arm area, but the specific subtype of Hodgkin lymphoma has not been specified. Hodgkin lymphoma is a serious blood cancer that requires immediate medical attention and treatment.

Coding Tips

• •Verify the documentation specifies the anatomical location as axilla and/or upper limb lymph nodes; if lymph nodes in other locations are also involved, additional codes may be needed to capture all affected sites
• •Confirm whether the histological subtype (nodular sclerosis, mixed cellularity, lymphocyte-rich, or lymphocyte-depleted) is documented; if available, use the more specific subtype code instead of 'unspecified'

Clinical Significance

Hodgkin lymphoma of unspecified type affecting axillary and upper limb lymph nodes represents a confirmed diagnosis at an accessible peripheral site without histologic subtype determination. Axillary lymphadenopathy may be the initial finding on physical exam or mammographic screening. The subtype should be determined through pathology to optimize treatment selection.

Documentation Requirements

• ✓Confirmed Hodgkin lymphoma diagnosis involving axillary or upper limb nodes
• ✓Physical exam or imaging documentation of the involved site
• ✓Laterality documentation when available
• ✓Explanation for unspecified subtype status
• ✓Provider assessment and treatment plan

Commonly Confused Codes