What consequence can result from violations of ACA Section 1557 nondiscrimination rules?

The consequence resulting from violations of ACA Section 1557 nondiscrimination rules can indeed include the revocation of an agent or broker's appointment. This stems from the requirement under the Affordable Care Act (ACA) that health plans must provide equal access to their services regardless of race, color, national origin, sex, age, or disability. When agents or brokers act in a manner that discriminates against certain individuals or groups, health plans may take disciplinary actions to uphold compliance with the law.

Revoking an agent or broker's appointment serves as a safeguard to ensure that all individuals receive the appropriate and equitable services mandated by nondiscrimination rules. This is essential for maintaining the integrity of the health system and protecting consumers' rights. In contrast, the other choices do not reflect the specific implications of violations of Section 1557. For instance, while cancellation of a health plan or returning premiums may seem plausible, these consequences do not directly align with the legal structures and enforcement mechanisms of the nondiscrimination rules laid out in the ACA. Therefore, the revocation of appointments is the most relevant consequence linked to these regulations.