CPT code 0087U is a Proprietary Laboratory Analyses (PLA) code for the Molecular Microscope® MMDx—Heart test from Kashi Clinical Laboratories that measures mRNA expression in transplanted heart biopsy tissue and compares results to a reference library to assess causes of transplant organ dysfunction; service type: molecular diagnostic laboratory test performed on transplant biopsy specimens; typical site of service: outpatient or hospital-based clinical laboratory with specimen collection in a hospital or ambulatory biopsy setting.

For related coverage guidance, see recent payer policy updates: RTM Testing of Homocysteine Metabolism-Related Conditions, Multimarker Serum Testing Related to Ovarian Cancer, Genomic Profiling for Selecting Targeted Cancer Therapies.