ICD-10 Code C83.07 – Small cell B-cell lymphoma, spleen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.07 – Small cell B-cell lymphoma, spleen
What it is
C83.07 identifies small cell B-cell lymphoma involving the spleen. Use it when the record documents this specific lymphoma subtype and primary spleen involvement.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records may note splenic enlargement, cytopenias, or pathology confirming a small cell B-cell lymphoma in the spleen.
When to use this code
Use this code when the provider clearly documents small cell B-cell lymphoma of the spleen, or when pathology and site documentation support that diagnosis. Code it only when the spleen is the documented involved site. If the chart is unclear about histology or primary site, check documentation before assigning C83.07.
Do not use for
Do not use this code for other lymphoma subtypes, generalized lymphoma without spleen involvement, or nonspecific splenomegaly. Check documentation if the record only says “B-cell lymphoma” or “lymphoma, spleen” without the small cell subtype.
Coding tip
Confirm both the histologic type and the spleen site in the pathology or oncology note before coding.