E21.0
Primary hyperparathyroidism
- Release
- FY 2027
- Effective
Hierarchy
Where E21.0 sits in the official hierarchy. Each level is the code it is classified under.
- E21 Parent Hyperparathyroidism and other disorders of parathyroid gland
- E21.0 This code Primary hyperparathyroidism
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Inclusion Terms
Hyperplasia of parathyroid
Inclusion Terms
Osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone]
Excludes1
adult osteomalacia ( M83 .-)
Inherited from E21 — Hyperparathyroidism and other disorders of parathyroid gland
Excludes1
ectopic hyperparathyroidism ( E34.2 )
Inherited from E21 — Hyperparathyroidism and other disorders of parathyroid gland
Version History
How E21.0 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentPrimary hyperparathyroidism
-
FY 2026 Effective
UnchangedPrimary hyperparathyroidism
Related Codes
Other codes under E21
Codes whose official notes reference E21.0
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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