E20.818
✓ Billable
Other specified hypoparathyroidism due to impaired parathyroid hormone secretion
ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases
Code
E20.818
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code E20.818?
ICD-10-CM code E20.818 represents Other specified hypoparathyroidism due to impaired parathyroid hormone secretion. It is a billable diagnosis code in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E20.818 billable?
Yes. E20.818 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is E20.818 in?
E20.818 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.
Related codes in the E20 category
E20
Hypoparathyroidism
Non-billable
E20.0
Idiopathic hypoparathyroidism
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E20.1
Pseudohypoparathyroidism
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E20.8
Other hypoparathyroidism
Non-billable
E20.9
Hypoparathyroidism, unspecified
Billable
E20.81
Hypoparathyroidism due to impaired parathyroid hormone secretion
Non-billable
E20.89
Other specified hypoparathyroidism
Billable
E20.810
Autosomal dominant hypocalcemia
Billable
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