Diagnosis Code E21
Information for Medical Professionals
References found for the code E21 in the Index of Diseases and Injuries:
- Type 1 Excludes Notes: Type 1 Excludes Notes
A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- adult osteomalacia (M83.-)
- ectopic hyperparathyroidism (E34.2)
- familial hypocalciuric hypercalcemia (E83.52)
- hungry bone syndrome (E83.81)
- infantile and juvenile osteomalacia (E55.0)
Information for Patients
Most people have four pea-sized glands, called parathyroid glands, on the thyroid gland in the neck. Though their names are similar, the thyroid and parathyroid glands are completely different. The parathyroid glands make parathyroid hormone (PTH), which helps your body keep the right balance of calcium and phosphorous.
If your parathyroid glands make too much or too little hormone, it disrupts this balance. If they secrete extra PTH, you have hyperparathyroidism, and your blood calcium rises. In many cases, a benign tumor on a parathyroid gland makes it overactive. Or, the extra hormones can come from enlarged parathyroid glands. Very rarely, the cause is cancer.
If you do not have enough PTH, you have hypoparathyroidism. Your blood will have too little calcium and too much phosphorous. Causes include injury to the glands, endocrine disorders, or genetic conditions. Treatment is aimed at restoring the balance of calcium and phosphorous.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
- Calcium - ionized
- Calcium - urine
- Calcium blood test
- Hypercalcemia - discharge
- Parathyroid adenoma
- Parathyroid biopsy
- Parathyroid cancer
- Parathyroid gland removal
- Parathyroid hormone (PTH) blood test