ICD-10 Code C81.46 – Lymphocyte-rich Hodgkin lymphoma, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C81.46 – Lymphocyte-rich Hodgkin lymphoma, intrapelvic lymph nodes
What it is
C81.46 identifies lymphocyte-rich Hodgkin lymphoma involving intrapelvic lymph nodes. Use it when documentation specifies this Hodgkin lymphoma subtype and the pelvic nodal site.
Clinical signs
Clinical features vary; refer to documentation. Hodgkin lymphoma may present with enlarged lymph nodes and other systemic findings, but the code depends on the documented subtype and intrapelvic location.
When to use this code
Use this code when the provider documents lymphocyte-rich Hodgkin lymphoma in intrapelvic lymph nodes, such as a biopsy-confirmed pelvic nodal diagnosis. You should also use it when the record clearly links the lymphoma subtype to the pelvic nodal site.
If the note only says Hodgkin lymphoma without subtype or location, check documentation before coding. Do not assume intrapelvic involvement from imaging alone unless the diagnosis is stated.
Do not use for
Do not use this code for other Hodgkin lymphoma subtypes or for lymphoma in non-pelvic nodes. Check documentation if the site is unspecified or if the diagnosis is not confirmed.
Coding tip
Code the documented subtype and nodal location exactly; if either element is missing, query the record before assigning C81.46.