I would compare it with fees for guardians, and attorneys in guardianship proceedings.  This is what Pub 502 has to say about that.  Also, most hospitals have social workers on staff.  I don't know if those costs are billed separately, but they certainly make sure that medical care is provided.  I don't think IRS requires deductions for hospital bills to back out the social-worker services.  

Legal Fees
You can include in medical expenses legal fees you paid that are necessary to authorize treatment for mental illness. However, you can't include in medical expenses fees for the management of a guardianship estate, fees for conducting the affairs of the person being treated, or other fees that aren't necessary for medical care.