2026 ICD-10-CM Diagnosis Code E21. 3: Hyperparathyroidism, unspecified E21 3 is a billable specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes The 2026 edition of ICD-10-CM E21 3 became effective on October 1, 2025 This is the American ICD-10-CM version of E21 3 - other international versions of ICD-10 E21 3 may differ
E21. 3 ICD 10 Code - Hyperparathyroidism, unspecified - Billable E21 3 is a valid billable ICD-10 diagnosis code for Hyperparathyroidism, unspecified It is found in the 2025 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2024 - Sep 30, 2025
Understanding Hyperparathyroidism (ICD-10 Code E21. 3) Learn about hyperparathyroidism (ICD-10 E21 3), a condition where the parathyroid glands produce too much hormone, affecting calcium levels Understand causes, symptoms, diagnosis, and treatment options