E21.0
BillablePrimary hyperparathyroidism
Primary hyperparathyroidism
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Hyperplasia of parathyroid
- Osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone]
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Related Codes(5)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(77)
SNOMED CT
- Parathyroid hyperplasia9092004
- Primary water-clear cell hyperplasia32463001
- Primary hyperparathyroidism36348003
- Fibro-osteoclasia84727000
- Fibrous osteodystrophy84727000
- Osteitis fibrosa cystica84727000
- Osteitis fibrosa cystica generalisata84727000
- Osteodystrophia fibrosa84727000
- Von Recklinghausen's disease of bone84727000
- von Recklinghausen's bone disease84727000
- Familial hyperparathyroidism237653008
- Familial primary hyperparathyroidism237653008
- Neonatal hyperparathyroidism254119005
- Familial cystic parathyroid adenomatosis702378002
- Familial primary hyperparathyroidism with multiple ossifying jaw fibromas702378002
- Hyperparathyroidism 2702378002
- Hyperparathyroidism-jaw tumor syndrome702378002
- Hyperparathyroidism-jaw tumour syndrome702378002
- Neonatal severe primary hyperparathyroidism715218009
- Edwards Patton Dilly syndrome724093004
- Nephropathy, deafness, hyperparathyroidism syndrome724093004
- FIHPT - familial isolated hyperparathyroidism786037006
- Familial isolated hyperparathyroidism786037006
- Normocalcemic primary hyperparathyroidism190045361000119101
UMLS
- Enlarged parathyroid glandsC0271844
- Hyperplasia of ParathyroidC0271844
- Hyperplasia of parathyroidC0271844
- Hyperplasia of the ParathyroidC0271844
- Parathyroid Gland HyperplasiaC0271844
- Parathyroid HyperplasiaC0271844
- Parathyroid hyperplasiaC0271844
- Parathyroid hyperplasia (disorder)C0271844
- parathyroid hyperplasiaC0271844
- HYPERPARATHYROIDISM, PRIMARYC0221002
- Hyperparathyroidism primaryC0221002
- Hyperparathyroidism, PrimaryC0221002
- Hyperparathyroidisms, PrimaryC0221002
- Primary HyperparathyroidismC0221002
- Primary HyperparathyroidismsC0221002
- Primary hyperparathyroidismC0221002
- Primary hyperparathyroidism (disorder)C0221002
- primary hyperparathyroidismC0221002
- Osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone]C2874186
Clinical Terms
- Hyperplasia of parathyroid
- Parathyroid Hyperplasia
- Hyperparathyroidism 2
- Normocalcemic primary hyperparathyroidism
- Primary Hyperparathyroidisms
- Fibrous osteodystrophy
- HYPERPARATHYROIDISM, PRIMARY
- Osteitis fibrosa cystica generalisata
- Edwards Patton Dilly syndrome
- Primary water-clear cell hyperplasia
- Neonatal hyperparathyroidism
- Osteodystrophia fibrosa
- Familial primary hyperparathyroidism with multiple ossifying jaw fibromas
- Enlarged parathyroid glands
- Hyperparathyroidism-jaw tumour syndrome
- Hyperparathyroidisms, Primary
- FIHPT - familial isolated hyperparathyroidism
- Von Recklinghausen's disease of bone
- Hyperparathyroidism primary
- von Recklinghausen's bone disease
- Familial hyperparathyroidism
- Parathyroid Gland Hyperplasia
- Nephropathy, deafness, hyperparathyroidism syndrome
- Parathyroid hyperplasia (disorder)
- Neonatal severe primary hyperparathyroidism
- Primary hyperparathyroidism (disorder)
- Osteitis fibrosa cystica generalisata [von Recklinghausen's disease of bone]
- Hyperplasia of the Parathyroid
- Familial cystic parathyroid adenomatosis
- Hyperparathyroidism-jaw tumor syndrome
- Osteitis fibrosa cystica
- Familial primary hyperparathyroidism
- Fibro-osteoclasia
- Familial isolated hyperparathyroidism
Frequently Asked Questions
What is the ICD-10 code for primary hyperparathyroidism?
The ICD-10-CM code for primary hyperparathyroidism is E21.0. The full clinical description is "Primary hyperparathyroidism". E21.0 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code E21.0 mean?
ICD-10-CM code E21.0 represents “Primary hyperparathyroidism”. It is classified under Chapter 4: Endocrine, Nutritional and Metabolic Diseases and is a billable/specific code that can be used on a claim.
Is E21.0 a billable code?
Yes, E21.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is E21.0 in?
E21.0 is in Chapter 4: Endocrine, Nutritional and Metabolic Diseases (codes E00-E89).
What codes cannot be used with E21.0?
E21.0 has Excludes1 notes indicating codes that cannot be used together with it, including: transitory endocrine and metabolic disorders specific to newborn (P70-P74); galactorrhea (N64.3); gynecomastia (N62); and 4 more.
What SNOMED CT codes does E21.0 map to?
E21.0 maps to 11 SNOMED CT concepts: 724093004, 786037006, 702378002, 237653008, 84727000, and 6 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for E21.0?
E21.0 is linked to 3 UMLS Concept Unique Identifiers: C0271844, C0221002, C2874186. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does E21.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like primary hyperparathyroidism affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of E21.0?
E21.0 maps to the ICD-11 code: 5A51.0 (Primary hyperparathyroidism).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.