81540 Oncology tumor unknown origin
Also known as: cancer of unknown primary, tumor of unknown origin test
Oncology (tumor of unknown origin) classification using gene expression profiling.
In Plain Language
genetic test to find where cancer came from
Clinical Context
Gene expression-based profiling to identify tissue of origin in metastatic cancers with unknown primary site.
RVU Information
CPT 81540 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
Lab and pathology codes require an order from the treating provider with clinical indication. For molecular pathology and genetic testing, document the specific analytes tested and clinical rationale.
How This Code Compares
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the Pathology & Lab category, 94% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code 81540?
CPT 81540 (Oncology tumor unknown origin) is a Pathology & Lab code. Oncology (tumor of unknown origin) classification using gene expression profiling.
Who uses CPT code 81540?
CPT 81540 is used by oncology, molecular pathology, pathology. Gene expression-based profiling to identify tissue of origin in metastatic cancers with unknown primary site.
When is CPT 81540 used?
Gene expression-based profiling to identify tissue of origin in metastatic cancers with unknown primary site.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.