E21: Hyperparathyroidism and other disorders of parathyroid gland
E21.0: Primary hyperparathyroidism
The parathyroid glands are 4 small glands at the edge of the thyroid gland. A messenger substance is formed in the parathyroid glands. This messenger substance affects the calcium and phosphate content in the body. Calcium from the bone is dissolved by the messenger substance and released into the blood. It thus also affects bone firmness.
In your case, one or more parathyroid glands are working too much. The parathyroid glands may be too large, for example.
If you have too many messenger substances of the parathyroid gland in your blood, the calcium content in your blood may rise. At the same time, calcium is released from the bones. Then bone pain and joint pain may occur, for example. The bones can even become deformed. Other symptoms like a stomach ache or kidney stones may occur.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.