E20.818

E20.818: Other specified hypoparathyroidism due to impaired parathyroid hormone secretion

Billable / specific codeICD-10-CM

E20.818 is a billable, specific ICD-10-CM code for other specified hypoparathyroidism due to impaired parathyroid hormone secretion. It is valid for submission on a claim.

Check E20.818 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Familial isolated hypoparathyroidism

Excludes1 inherited from the categories above E20.818

A category’s note binds every code beneath it.

Written on E20: Hypoparathyroidism

Di George's syndrome (D82.1)
postprocedural hypoparathyroidism (E89.2)
tetany NOS (R29.0)
transitory neonatal hypoparathyroidism (P71.4)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

E20.818 is named in 10 Medicare coverage policies: 10 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56416Billing and Coding: Assays for Vitamins and Metabolic Function
A56798Billing and Coding: Vitamin D Assay Testing
A56841Billing and Coding: Vitamin D; 25 hydroxy, includes fraction(s), if performed
A57122Billing and Coding: Parathormone (Parathyroid Hormone)

Alphabetic index entries that lead here

Hypoparathyroidism›familial›isolated
Hypoparathyroidism›specified NEC›due to impaired parathyroid hormone secretion

Code history

Unchanged in every release from FY2024 to FY2027.