Secondary hypoparathyroidism in diseases classd elswhr

This code signifies a condition where the parathyroid glands produce insufficient parathyroid hormone (PTH) due to an underlying medical condition, rather than a primary parathyroid gland dysfunction. This insufficiency leads to hypocalcemia and hyperphosphatemia, impacting various bodily functions.

Use this code when documentation clearly indicates secondary hypoparathyroidism caused by another specified disease, such as chronic kidney disease, severe magnesium deficiency, or extensive parathyroidectomy performed for a non-parathyroid malignancy. The underlying disease should be clearly documented as the etiology.

• Always sequence the underlying disease causing the secondary hypoparathyroidism first, as this code is an "in diseases classified elsewhere" code.
• Do not use this code for primary hypoparathyroidism (e.g., autoimmune or idiopathic) or postsurgical hypoparathyroidism not related to another disease.
• Ensure the medical record explicitly links the hypoparathyroidism to the documented underlying condition.