E21.4

HCC Category Mapping

What This Code Means

A specified disorder affecting the parathyroid glands that doesn't fit into other defined categories, such as parathyroid hyperplasia or other specific gland dysfunction.

Coding Tips

• •Use this code only when the specific parathyroid disorder is documented but doesn't match E21.0-E21.3 categories
• •Review documentation for any mention of hyperparathyroidism, hypoparathyroidism, or other specified conditions to ensure correct code selection

Clinical Significance

Other specified disorders of the parathyroid gland captures rare or atypical parathyroid conditions that do not fit standard hyperparathyroidism or hypoparathyroidism categories. These may include parathyroid cysts, ectopic parathyroid tissue disorders, or other unusual gland pathology requiring specialized management.

Documentation Requirements

• ✓Document the specific parathyroid disorder by name, diagnostic workup results including imaging and lab values, clinical significance of the condition, and current management plan.

Commonly Confused Codes