CMS Lymphocyte Mitogen Response Assays Form
This procedure is not covered
Background for this Policy
The lymphocyte mitogen response assay measures the immune response of patient peripheral blood lymphocytes.
It is a covered test under Medicare when it is medically necessary to assess lymphocytic function in diagnosed immunodeficiency diseases and to monitor immunotherapy.
It is not covered when it is used to monitor the treatment of cancer, because its use for that purpose is experimental.