ICD-10 Code C83.96 – Non-follicular (diffuse) lymphoma, unspecified, intrapelvic lymph nodes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.96 – Non-follicular (diffuse) lymphoma, unspecified, intrapelvic lymph nodes
What it is
C83.96 identifies a non-follicular, or diffuse, lymphoma affecting intrapelvic lymph nodes. Use it when the record specifies this lymphoma type and pelvic nodal location but does not name a more specific subtype.
Clinical signs
Clinical features vary; refer to documentation. Patients may have enlarged pelvic lymph nodes noted on imaging, biopsy, or pathology, with lymphoma confirmed by the treating clinician.
When to use this code
Use this code when the diagnosis states non-follicular (diffuse) lymphoma in intrapelvic lymph nodes and no further histologic detail is documented. It also fits when the site is pelvic nodes and the lymphoma subtype remains unspecified. Check documentation if the record mentions another nodal region.
Do not use for
Do not use it for follicular lymphoma, other specified lymphoma subtypes, or lymphoma in non-pelvic lymph nodes. If the pathology report provides a more specific diagnosis, code that instead.
Coding tip
Confirm both the lymphoma type and the intrapelvic node location before assigning C83.96.