83945 Assay of oxalate
Also known as: urine oxalate, oxalate assay
Quantitative measurement of oxalate concentration in urine using high-performance liquid chromatography or enzymatic methods.
In Plain Language
kidney stone risk marker
Clinical Context
Assessment of urinary oxalate excretion in evaluation of kidney stone risk and primary hyperoxaluria. Elevated oxalate increases calcium oxalate stone formation risk.
RVU Information
CPT 83945 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 83945?
CPT 83945 (Assay of oxalate) is a Pathology & Lab code. Quantitative measurement of oxalate concentration in urine using high-performance liquid chromatography or enzymatic methods.
Who uses CPT code 83945?
CPT 83945 is used by Pathology, Nephrology, Internal Medicine. Assessment of urinary oxalate excretion in evaluation of kidney stone risk and primary hyperoxaluria. Elevated oxalate increases calcium oxalate stone formation risk.
When is CPT 83945 used?
Assessment of urinary oxalate excretion in evaluation of kidney stone risk and primary hyperoxaluria. Elevated oxalate increases calcium oxalate stone formation risk.
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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.