84442 Assay of thyroid activity
Also known as: thyroid uptake, radioactive iodine uptake, thyroid function
Assay of thyroid uptake or thyroid hormone uptake, measuring thyroid gland hormone metabolism and function.
In Plain Language
thyroid function test
Clinical Context
Evaluates thyroid function and ability to utilize iodine; reduced in hypothyroidism, elevated in hyperthyroidism.
RVU Information
CPT 84442 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 84442?
CPT 84442 (Assay of thyroid activity) is a Pathology & Lab code. Assay of thyroid uptake or thyroid hormone uptake, measuring thyroid gland hormone metabolism and function.
Who uses CPT code 84442?
CPT 84442 is used by Endocrinology, Nuclear Medicine, Clinical Chemistry. Evaluates thyroid function and ability to utilize iodine; reduced in hypothyroidism, elevated in hyperthyroidism.
When is CPT 84442 used?
Evaluates thyroid function and ability to utilize iodine; reduced in hypothyroidism, elevated in hyperthyroidism.
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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.