E20: Hypoparathyroidism
Codes under E20 (Hypoparathyroidism). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| E20.0 | Idiopathic hypoparathyroidism | ✓ |
| E20.0 | Idiopathic hypoparathyroidism | ✓ |
| E20.1 | Pseudohypoparathyroidism | ✓ |
| E20.1 | Pseudohypoparathyroidism | ✓ |
| E20.8 | Other hypoparathyroidism | — |
| E20.8 | Other hypoparathyroidism | — |
| E20.9 | Hypoparathyroidism, unspecified | ✓ |
| E20.9 | Hypoparathyroidism, unspecified | ✓ |
| E20.81 | Hypoparathyroidism due to impaired parathyroid hormone secretion | — |
| E20.81 | Hypoparathyroidism due to impaired parathyroid hormone secretion | — |
| E20.89 | Other specified hypoparathyroidism | ✓ |
| E20.89 | Other specified hypoparathyroidism | ✓ |
| E20.810 | Autosomal dominant hypocalcemia | ✓ |
| E20.810 | Autosomal dominant hypocalcemia | ✓ |
| E20.811 | Secondary hypoparathyroidism in diseases classified elsewhere | ✓ |
| E20.811 | Secondary hypoparathyroidism in diseases classified elsewhere | ✓ |
| E20.812 | Autoimmune hypoparathyroidism | ✓ |
| E20.812 | Autoimmune hypoparathyroidism | ✓ |
| E20.818 | Other specified hypoparathyroidism due to impaired parathyroid hormone secretion | ✓ |
| E20.818 | Other specified hypoparathyroidism due to impaired parathyroid hormone secretion | ✓ |
| E20.819 | Hypoparathyroidism due to impaired parathyroid hormone secretion, unspecified | ✓ |
| E20.819 | Hypoparathyroidism due to impaired parathyroid hormone secretion, unspecified | ✓ |
Frequently asked questions
What is ICD-10-CM code E20?
E20 is an ICD-10-CM category covering Hypoparathyroidism. It contains 22 more specific diagnosis codes, 18 of which are billable.
Is E20 a billable code?
No — E20 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example E20.0 — Idiopathic hypoparathyroidism). 18 of the 22 codes under E20 are billable.
What codes fall under E20?
E20 includes E20.0, E20.0, E20.1, E20.1, E20.8, plus 17 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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