If the company plans to submit an economic model or is required to do so, it should inform NICE which software will be used. NICE accepts fully executable economic models using standard software, that is, Excel, DATA/Treeage, R or WinBUGs. If the company plans to submit a model in a different software package, it should tell NICE in advance. NICE, with the EAG, will investigate if the requested software is acceptable. When the company submits a fully executable electronic copy of the model, it must give NICE full access to the programming code. It should ensure that the submitted versions of the model program and the written content of the evidence submission match.