E20.811
BillableSecondary hypoparathyroidism in diseases classified elsewhere
HCC Category Mapping
V24HCC 23 — Other Significant Endocrine and Metabolic Disorders
0.230ESRDHCC 23 — Other Significant Endocrine and Metabolic Disorders
0.000RxHCCHCC 43 — Other Significant Endocrine and Metabolic Disorders
0.000What This Code Means
Low parathyroid hormone production that develops as a result of another disease or medical condition classified elsewhere in the ICD-10 system.
Coding Tips
- •Always use an additional code to identify the underlying disease causing the secondary hypoparathyroidism
- •Review the patient's other diagnoses to determine the primary condition responsible for the parathyroid dysfunction
Clinical Significance
E20.811 identifies secondary hypoparathyroidism in diseases classified elsewhere, most commonly occurring after thyroidectomy, parathyroidectomy, or radiation therapy to the neck. It can also occur secondary to infiltrative diseases (hemochromatosis, Wilson disease) or magnesium depletion. This is the most common form of hypoparathyroidism encountered in clinical practice.
Documentation Requirements
- ✓Documentation must include the hypoparathyroidism diagnosis, the underlying cause or associated disease, and supporting laboratory evidence.
- ✓The primary condition causing the secondary hypoparathyroidism must be coded first, with E20.811 as an additional code.
- ✓Calcium levels, parathyroid hormone levels, and current replacement therapy should be documented.
Code First
- underlying condition, if known
Commonly Confused Codes
Code Hierarchy
└E20Hypoparathyroidism└E20.8Other hypoparathyroidism└E20.81Hypoparathyroidism due to impaired parathyroid hormone secretion└E20.811Secondary hypoparathyroidism in diseases classified elsewhere
└E20.811Secondary hypoparathyroidism in diseases classified elsewhere