It's crazy to me that insurers resist paying for mental healthcare so hard. Mental health care is dirt cheap compared to physical health care. A night at an inpatient hospital and pro-fees cost a private insurer a very low four-digit sum, depending on the contracted rate. I think the highest reimbursement rate I ever saw was about $1K per diem. A night in the ICU plus all the fees and meds can easily rocket to 5, maybe 6 figures.
Even more perplexing is that getting your mental health taken care of often positively impacts physical health and self-care, reducing insurance costs over time. I guess over time is the problem, because no one cares about saving money in the future, just right now.