CPT® Code 60505

The CPT® Code 60505 refers to a surgical procedure known as parathyroidectomy or exploration of the parathyroid glands, specifically when a mediastinal exploration, sternal split, or transthoracic approach is utilized. The parathyroid glands, typically four in number, are small endocrine glands located behind the thyroid gland, with two situated in each lobe at the upper and lower lateral aspects. Their primary function is to regulate calcium levels in the bloodstream by secreting parathyroid hormone (PTH). When blood calcium levels decrease, the parathyroid glands release PTH to elevate these levels, and conversely, they cease secretion when calcium levels normalize. This procedure is indicated when there is an enlargement of one or more parathyroid glands, often due to a parathyroid adenoma, which leads to hyperparathyroidism characterized by excessive production of PTH. During the surgery, a transverse incision is made in the neck over the thyroid gland, allowing access to the parathyroid glands. The surgeon elevates the thyroid to expose the enlarged gland, which is then dissected from surrounding tissues and excised. If other parathyroid glands are found to be enlarged during the procedure, they may also be removed. In cases where all four glands are excised, a parathyroid autotransplantation may be performed, where small pieces of normal parathyroid tissue are implanted into a muscle, typically the sternocleidomastoid or a forearm muscle, to preserve parathyroid function. The use of CPT® Code 60505 is specifically for instances where a more invasive approach, such as a sternal split or transthoracic method, is necessary to access the enlarged parathyroid gland, which may involve dissection and exploration of the mediastinum.