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ICD-10-CM category

E21: Hyperparathyroidism and other disorders of parathyroid gland

6 subcodes · 6 billable · Look up any code with the ICD-10 search

Codes under E21 (Hyperparathyroidism and other disorders of parathyroid gland). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

CodeDescriptionBillable
E21.0Primary hyperparathyroidism✓
E21.1Secondary hyperparathyroidism, not elsewhere classified✓
E21.2Other hyperparathyroidism✓
E21.3Hyperparathyroidism, unspecified✓
E21.4Other specified disorders of parathyroid gland✓
E21.5Disorder of parathyroid gland, unspecified✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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