84590 Assay of vitamin a
Also known as: serum vitamin A, retinol level
Quantitative assay of vitamin A (retinol) concentration in serum or plasma, measured by liquid chromatography or fluorescence methods to assess nutritional status and fat-soluble vitamin absorption.
In Plain Language
vitamin A blood test; eye vitamin level
Clinical Context
Evaluates malabsorption, liver disease, or vitamin A toxicity/deficiency; low levels associated with night blindness, xerophthalmia, and immune dysfunction.
RVU Information
CPT 84590 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 84590?
CPT 84590 (Assay of vitamin a) is a Pathology & Lab code. Quantitative assay of vitamin A (retinol) concentration in serum or plasma, measured by liquid chromatography or fluorescence methods to assess nutritional status and fat-soluble vitamin absorption.
Who uses CPT code 84590?
CPT 84590 is used by Clinical Pathology, Nutrition, Internal Medicine. Evaluates malabsorption, liver disease, or vitamin A toxicity/deficiency; low levels associated with night blindness, xerophthalmia, and immune dysfunction.
When is CPT 84590 used?
Evaluates malabsorption, liver disease, or vitamin A toxicity/deficiency; low levels associated with night blindness, xerophthalmia, and immune dysfunction.
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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.