ICD-10 Code C83.54 – Lymphoblastic (diffuse) lymphoma, lymph nodes of axilla and upper limb (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C83.54 – Lymphoblastic (diffuse) lymphoma, lymph nodes of axilla and upper limb
What it is
C83.54 identifies lymphoblastic (diffuse) lymphoma involving lymph nodes of the axilla and upper limb. Use it when the record specifies this lymphoma type and this nodal site.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include enlarged axillary or upper-limb lymph nodes, with diagnosis confirmed by pathology and clinical evaluation.
When to use this code
Use this code when the provider documents lymphoblastic (diffuse) lymphoma in axillary or upper-limb lymph nodes. It also fits cases where the site is clearly stated as the axilla or upper limb and the lymphoma type is confirmed.
If the chart names lymphoma without specifying the nodal region, check documentation before coding. Do not assume this code for other lymph node groups or for nonspecific lymphadenopathy.
Do not use for
Do not use C83.54 for lymphomas in other anatomic sites, or when the record does not identify the axilla or upper limb. Check documentation if the diagnosis is only “lymphoma” or “lymphadenopathy.”
Coding tip
Verify both the lymphoma subtype and the exact nodal location before assigning C83.54.