ICD-10 Code: E21.1 – Secondary hyperparathyroidism, not elsewhere classified

ICD-10 code E21.1 corresponds to Secondary hyperparathyroidism, not elsewhere classified. This code is classified under the chapter E21 Hyperparathyroidism and other disorders of parathyroid gland, which is part of the E20-E35: Disorders of other endocrine glands category.

The parent chapter is Endocrine, nutritional and metabolic diseases.