ICD-10-CM 2027 diagnosis code
E20.81Hypoparathyroidism due to impaired parathyroid hormone secretion
E20.81 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Hypoparathyroidism due to impaired PTH secretion
Code last changed in FY2024 (effective October 1, 2023). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About E20.81
E20.81 is the ICD-10-CM diagnosis code for hypoparathyroidism due to impaired parathyroid hormone secretion. It belongs to category E20 (hypoparathyroidism), block E20-E35 (disorders of other endocrine glands) and chapter 4 (endocrine, nutritional and metabolic diseases). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.
Within E20.8 (other hypoparathyroidism), E20.81 is specifically for hypoparathyroidism due to impaired parathyroid hormone secretion. Related codes cover other specified hypoparathyroidism (E20.89).
To report this condition, pick the subcode that matches the documentation: E20.810 (hypocalcemia), E20.811 (elsewhere), E20.812 (hypoparathyroidism), E20.818 (secretion) and E20.819 (unspecified).
It was added in FY2024, effective October 1, 2023.
Specific codes under E20.81
- E20.810Autosomal dominant hypocalcemiaBillable
- E20.811Secondary hypoparathyroidism in diseases classified elsewhereBillable
- E20.812Autoimmune hypoparathyroidismBillable
- E20.818Other specified hypoparathyroidism due to impaired parathyroid hormone secretionBillable
- E20.819Hypoparathyroidism due to impaired parathyroid hormone secretion, unspecifiedBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to E20.81.
› From E20 Hypoparathyroidism
Broader instructions also apply from E20-E35 Disorders of other endocrine glands and Chapter 4: Endocrine, nutritional and metabolic diseases.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2024 (effective 10/1/2023): Added
- No changes since FY2024.
Common questions about E20.81
Is E20.81 billable?
- No. E20.81 is a header code. Report one of its more specific subcodes instead.