Most Medicare prescription drug plans provide coverage for Mounjaro for type 2 diabetes treatment. However, when Mounjaro is prescribed off-label for weight loss, insurance coverage is often not available. This is because the Affordable Care Act does not require health insurance companies to cover medications or surgeries for obesity or overweight conditions. The national association of health care providers known as AHIP claims that there is not enough evidence to prove the long-term effectiveness of anti-obesity drugs, and that weight loss is not sustained after discontinuing the medication. Therefore, it is not surprising that some insurance companies don't want to cover the cost of an expensive medication that may be needed for a patient's entire lifetime.