Source:http://linkedlifedata.com/resource/umls/id/C0008679
MSH: Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (Dictionary of Health Services Management, 2d ed),CSP: disease or disorder which has persisted over a long period of time; post coordinate with specific disease or disorder if appropriate.