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E21.0 - Primary hyperparathyroidism


The ICD 10 Code for Primary hyperparathyroidism is listed as E21.0.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: E21.0
Description: Primary hyperparathyroidism
  • Hyperplasia of parathyroid
  • Osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone]
Diagnostic Related Groups
(MS-DRG v30.0)
643 - Endocrine Disorders W Mcc
644 - Endocrine Disorders W Cc
645 - Endocrine Disorders W/o Cc/mcc
Chapter Endocrine, nutritional and metabolic diseases (E00-E89)
Block Disorders of other endocrine glands (E20-E35)
Parent E21 - Hyperparathyroidism and other disorders of parathyroid gland
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code: 252.01 - Primary hyperparathyroidism
ICD-10-CM Siblings (same level / similar specificity) of E21.0:
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