84545 Urea-n clearance test
Also known as: BUN clearance, urea clearance test
Quantitative measurement of urea nitrogen (blood urea nitrogen/BUN) clearance through urinalysis and serum testing to assess renal function and glomerular filtration rate.
In Plain Language
kidney function test; urea filtering test
Clinical Context
Used to evaluate kidney function by measuring how effectively the kidneys filter urea nitrogen from the blood. Commonly ordered in patients with suspected renal disease, hypertension, or diabetes.
RVU Information
CPT 84545 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 84545?
CPT 84545 (Urea-n clearance test) is a Pathology & Lab code. Quantitative measurement of urea nitrogen (blood urea nitrogen/BUN) clearance through urinalysis and serum testing to assess renal function and glomerular filtration rate.
Who uses CPT code 84545?
CPT 84545 is used by Clinical Pathology, Nephrology, Internal Medicine. Used to evaluate kidney function by measuring how effectively the kidneys filter urea nitrogen from the blood. Commonly ordered in patients with suspected renal disease, hypertension, or diabetes.
When is CPT 84545 used?
Used to evaluate kidney function by measuring how effectively the kidneys filter urea nitrogen from the blood. Commonly ordered in patients with suspected renal disease, hypertension, or diabetes.
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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.