84105 Assay of urine phosphorus
Also known as: urine phosphate, 24-hour phosphate, urinary phosphate
Quantitative assay of urine phosphorus (phosphate) concentration, reflecting phosphate excretion and mineral metabolism status.
In Plain Language
urine phosphate level test
Clinical Context
Used to evaluate mineral metabolism, kidney phosphate handling, and parathyroid function; helps assess hypercalcemia, kidney disease, and bone disorders.
RVU Information
CPT 84105 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 84105?
CPT 84105 (Assay of urine phosphorus) is a Pathology & Lab code. Quantitative assay of urine phosphorus (phosphate) concentration, reflecting phosphate excretion and mineral metabolism status.
Who uses CPT code 84105?
CPT 84105 is used by Clinical Chemistry, Pathology, Nephrology. Used to evaluate mineral metabolism, kidney phosphate handling, and parathyroid function; helps assess hypercalcemia, kidney disease, and bone disorders.
When is CPT 84105 used?
Used to evaluate mineral metabolism, kidney phosphate handling, and parathyroid function; helps assess hypercalcemia, kidney disease, and bone disorders.
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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.