Benign neoplasm of parathyroid gland

This code signifies a non-cancerous tumor originating in one of the parathyroid glands. These benign growths, often adenomas, can lead to hyperparathyroidism by overproducing parathyroid hormone (PTH), which regulates calcium and phosphate levels in the blood.

Apply this code when documentation confirms a benign neoplasm of the parathyroid gland, typically identified through imaging (e.g., ultrasound, sestamibi scan) and confirmed by elevated PTH and calcium levels. It is appropriate for cases of primary hyperparathyroidism caused by a parathyroid adenoma.

• Distinguish from malignant parathyroid neoplasms (C75.0) or unspecified parathyroid neoplasms (D44.6).
• Code any associated hyperparathyroidism (E21.0) as a secondary diagnosis.
• Ensure pathology reports or operative notes explicitly state "benign" for the parathyroid lesion.