ICD-10 Code E20.89 – Other specified hypoparathyroidism (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E20.89 – Other specified hypoparathyroidism
What it is
E20.89 identifies hypoparathyroidism that is documented but does not fit a more specific ICD-10 category. Use it when the parathyroid problem is described as “other specified” or another named form not separately listed.
Clinical signs
Clinical features vary; refer to documentation. Hypoparathyroidism may present with symptoms related to low calcium, such as muscle cramps, tingling, or tetany, but you should code only what is documented.
When to use this code
Use E20.89 when the provider clearly diagnoses a specific hypoparathyroid disorder that is not captured by the more common ICD-10 options. It may also fit cases where the record names an unusual or residual form and the documentation supports hypoparathyroidism. Check documentation if the cause or type is unclear.
Do not use for
Do not use this code for unspecified hypoparathyroidism when the record lacks detail. Also avoid it if the diagnosis is another parathyroid disorder, such as hyperparathyroidism or a postoperative state that is coded elsewhere.
Coding tip
Match the code to the exact wording in the assessment and confirm that “other specified” is truly documented.