Billable / Specific Code
ICD-10-CM E20.818 is the diagnosis code for Other specified hypoparathyroidism due to impaired parathyroid hormone secretion. This code falls under the section "Disorders of other endocrine glands" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where E20.818 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, E20.818 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
E20.818 is the ICD-10-CM diagnosis code for "Other specified hypoparathyroidism due to impaired parathyroid hormone secretion". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of E20.818 is E20.81 ("Hypoparathyroidism due to impaired parathyroid hormone secretion"). E20.818 provides a more specific classification within this category.
E20.818 is located in Section E20-E35 — "Disorders of other endocrine glands" within Chapter 4 of the ICD-10-CM Tabular List.
Use E20.818 when the patients documented diagnosis matches "Other specified hypoparathyroidism due to impaired parathyroid hormone secretion" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Other specified hypoparathyroidism due to impaired parathyroid hormone secretion is E20.818.
Yes, E20.818 can be used as a primary diagnosis code since it is billable and specific.
E20.818 is in Chapter 4 of the ICD-10-CM Tabular List.
Yes, E20.818 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.