C85.1 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Unspecified B-cell lymphoma.
If B-cell lineage or involvement is mentioned in conjunction with a specific lymphoma, code to the more specific description.
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Unspecified B-cell lymphoma, unspecified site
Unspecified B-cell lymphoma, lymph nodes of head, face, and neck
Unspecified B-cell lymphoma, intrathoracic lymph nodes
Unspecified B-cell lymphoma, intra-abdominal lymph nodes
Unspecified B-cell lymphoma, lymph nodes of axilla and upper limb
Unspecified B-cell lymphoma, lymph nodes of inguinal region and lower limb
Unspecified B-cell lymphoma, intrapelvic lymph nodes
Unspecified B-cell lymphoma, spleen
Unspecified B-cell lymphoma, lymph nodes of multiple sites
Unspecified B-cell lymphoma, extranodal and solid organ sites
Unspecified B-cell lymphoma, in remission
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