The requirements outlined in the answer to the previous question apply to comprehensive health insurance plans subject to state regulation, known as health benefit plans. If you purchased your plan on the Health Insurance Marketplace (HealthCare.gov), you have a health benefit plan to which these requirements apply.
These requirements do not apply to self-insured plans or other forms of health coverage such as limited benefits plans, short-term limited-duration plans, or health care sharing ministries. They also do not apply to Medicare, Tricare, or other forms of federal health insurance.