E21Hyperparathyroidis m and other disorders of parathyroid gland
Code usage status
Primary diagnosis
Select a more specific code
Apply only when it matches the confirmed diagnosis and the documented clinical record.
Specificity
Do not use E21 directly
Use the most specific code supported by the record.
- Group E20-E35
- Disorders of other endocrine glands
- Official Vietnamese name
- Cường cận giáp và/hoặc rối loạn khác của tuyến cận giáp
- Additional WHO coding guidance
- Excl.: osteomalacia: adult (M83.-) infantile and juvenile (E55.0)
Related E21 codes
E21.0
Primary diagnosis candidate
Primary hyperparathyroidis m
E21.1
Primary diagnosis candidate
Secondary hyperparathyroidis m, not elsewhere classified
E21.2
Primary diagnosis candidate
Other hyperparathyroidis m
E21.3
Primary diagnosis candidate
Hyperparathyroidis m, unspecified
E21.4
Primary diagnosis candidate
Other specified disorders of parathyroid gland
E21.5
Primary diagnosis candidate
Disorder of parathyroid gland, unspecified
Clinical record checklist
View coding guide →- Confirm that the code matches the final documented diagnosis.
- Use one primary-diagnosis code and record only relevant additional conditions.
- Review Ministry indicators, inclusions, exclusions and notes.
- Do not infer a diagnosis beyond the clinical record.
2026 regulatory basis
Indicators are taken from columns 24–29 of the classification accompanying Circular 06/2026/TT-BYT, cross-referenced with Decision 1849/QĐ-BYT and Official Dispatch 4059/BYT-BH.
