84120 Assay of urine porphyrins
Also known as: urine porphyrins quantitative, uroporphyrin assay, coproporphyrin assay
Quantitative assay of urine porphyrins (uroporphyrin and coproporphyrin), measuring specific porphyrin concentrations.
In Plain Language
urine porphyrin level test
Clinical Context
Quantifies urine porphyrins to diagnose and monitor porphyrias; elevated levels indicate porphyrin metabolism disorders including acute intermittent porphyria.
RVU Information
CPT 84120 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 84120?
CPT 84120 (Assay of urine porphyrins) is a Pathology & Lab code. Quantitative assay of urine porphyrins (uroporphyrin and coproporphyrin), measuring specific porphyrin concentrations.
Who uses CPT code 84120?
CPT 84120 is used by Pathology, Clinical Chemistry, Genetics. Quantifies urine porphyrins to diagnose and monitor porphyrias; elevated levels indicate porphyrin metabolism disorders including acute intermittent porphyria.
When is CPT 84120 used?
Quantifies urine porphyrins to diagnose and monitor porphyrias; elevated levels indicate porphyrin metabolism disorders including acute intermittent porphyria.
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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.