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Official Description

Thyroid uptake; single determination

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 78000 refers to a diagnostic procedure known as thyroid uptake, specifically a single determination. This procedure involves the introduction of radioactive iodine isotopes into the patient's body, which allows for the assessment of the thyroid gland's ability to absorb iodine. The thyroid gland, located in the neck, plays a crucial role in regulating metabolism and overall hormonal balance in the body. By measuring how quickly the iodine is absorbed, healthcare providers can gain valuable insights into the functioning of the thyroid. This single determination is essential for diagnosing various thyroid conditions, including hyperthyroidism or hypothyroidism. It is important to note that if multiple determinations of iodine absorption are required, CPT® Code 78001 should be used. Additionally, if the test is conducted after administering a hormone to enhance iodine uptake, CPT® Code 78003 is applicable. Understanding these distinctions is vital for accurate coding and billing in medical practice.

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