In ICD-10-CA, the diagnostic statement of "epidermoid carcinoma of the leg" would be classified to primary malignant neoplasm of the:

The classification of "epidermoid carcinoma of the leg" in ICD-10-CA as a primary malignant neoplasm of the skin of the leg is accurate because "epidermoid carcinoma" specifically refers to a type of skin cancer that typically arises from the epidermis, which is the outermost layer of skin. In ICD coding, it is essential to accurately identify the site and type of neoplasm based on its origin.

Epidermoid carcinoma, being a skin-related malignancy, is categorized under skin neoplasms. Therefore, when classifying such a condition, the appropriate code would reflect its primary location, which in this case is the skin of the leg.

This detailed understanding of the anatomical site where the neoplasm originates is critical in health information management, ensuring that healthcare records are precise and that appropriate treatment protocols can be established based on accurate coding.