ICD-10 Code C83.17 – Mantle cell lymphoma, spleen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.17 – Mantle cell lymphoma, spleen
What it is
C83.17 identifies mantle cell lymphoma involving the spleen. Use it when the record documents this specific non-Hodgkin lymphoma site, rather than lymphoma elsewhere or unspecified disease.
Clinical signs
Clinical features vary; refer to documentation. Standard references describe splenic involvement with enlargement, possible abdominal discomfort, or other lymphoma findings, but you should code only what is clearly documented.
When to use this code
Use C83.17 when the provider states mantle cell lymphoma of the spleen, or when the spleen is documented as the involved site for this lymphoma. It is appropriate for confirmed diagnoses, problem lists, and encounter notes that specify splenic involvement. If the record only says mantle cell lymphoma without site, check documentation for a more specific code.
Do not use for
Do not use this code for mantle cell lymphoma at another site, generalized lymphoma, or unspecified non-Hodgkin lymphoma. If the spleen is not clearly documented as involved, check documentation.
Coding tip
Look for wording that links mantle cell lymphoma directly to the spleen; site specificity drives selection of C83.17.