Humana’s departure from its Employer Group Commercial Medical Products business will happen over the next 18 to 24 months. Humana Inc. said it would exit its Employer Group Commercial Medical Products business, including all fully insured, self-funded and federal employee health benefit medical plans. The health-insurance company said the move comes after a strategic review that determined the business was no longer positioned to sustainably meet the needs of customers or to support Humana’s long-term strategic plans.