Background: The quality of interdisciplinary cooperation is one of the most important factors in the success and long-term stability of treatment of patients suffering from orofacial dysfunctions. However, speech pathologists have criticized the poor communication and diagnosis at the time of referral and have requested a standardized diagnostic referral sheet with the aim of improving interdisciplinary cooperation. Diagnostic Referral Sheet: The diagnostic referral sheet presented here is based on the demands of speech pathologists focusing on myofunctional therapy and helps in initial assessment of the individual situation and necessary treatment. It is subject to continuous updating and coordinates the many medical disciplines involved on account of the complex pathology. Conclusion: The multidisciplinary diagnostic referral sheet, which is independent of treatment methods and compressed into one page, is aimed at contributing to quality assurance and to the improved documentation of orofacial dysfunctions.