ICD-10-CM Code E21: Hyperparathyroidism and other disorders of parathyroid gland and Related Diagnosis Codes.


The ICD-10-CM (the International Classification of Diseases, Tenth Revision, Clinical Modification) is a standardized coding system used when classifying diseases and medical conditions. Healthcare providers report these codes on Medical claims when diagnosing patient care.

Explore ICD-10-CM codes, organized by chapters based on body systems and medical conditions, as outlined in the International Classification of Diseases, Tenth Revision, Clinical Modification.

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Eclaims - ICD-10-CM Tabular Code List v1.0.0

A categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions, according to the International Classification of Diseases, Tenth Revision, Clinical Modification.

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

Note: The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes are developed and maintained by the Centers for Disease Control and Prevention (CDC). CDC's National Center for Health Statistics (NCHS) is responsible for the clinical modification of ICD-10 for use in the United States. The World Health Organization (WHO), which owns and publishes ICD-10, authorized NCHS to develop ICD-10-CM. All modifications to ICD-10 must conform to WHO's established ICD structure and conventions. All rights are reserved by the respective entities.