E20Header code — not billable
Hypoparathyroidism
- Chapter
- 4. Endocrine, nutritional and metabolic diseases
- Category
- E20
- Effective date
- October 1, 2026
Related codes in category E20
E20.0Idiopathic hypoparathyroidismYesE20.1PseudohypoparathyroidismYesE20.8Other hypoparathyroidismE20.81Hypoparathyroidism due to impaired PTH secretionE20.810Autosomal dominant hypocalcemiaYesE20.811Secondary hypoparathyroidism in diseases classd elswhrYesE20.812Autoimmune hypoparathyroidismYesE20.818Oth hypoparathyroidism due to impaired PTH secretionYesE20.819Hypoparathyroidism due to impaired PTH secretion, unspYesE20.89Other specified hypoparathyroidismYesE20.9Hypoparathyroidism, unspecifiedYes
Frequently asked questions
What is ICD-10 code E20?
E20 is an ICD-10-CM diagnosis code for Hypoparathyroidism.
Is E20 a billable code?
No. E20 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is E20 in?
E20 falls under Chapter 4: Endocrine, nutritional and metabolic diseases.
When did E20 become effective?
E20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to E20?
E20 belongs to category E20, which includes 11 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.