OBJECTIVES: Service impact models can support payers in evaluating the impact of innovative new technologies that cause a step change in system delivery; this study aimed to identify published examples of service impact and system design models for innovative non-pharmaceutical health technologies. METHODS: A structured literature review, using Medline and handsearching of relevant websites, was conducted on 17^th April 2018 to identify relevant articles published since 2013 describing models for novel health technologies in Europe or the US. Studies of interest included a device/product that has been implemented in relation to a service delivery change, or introduction of a device or product that has enabled a system change or a change in patient pathway. RESULTS: In total, 1,613 records were identified from Medline and handsearching. Following screening, 11 case studies were identified for inclusion in the review, 9 (82%) of which involved cardiac interventions. Seven studies (64%) were devices to reduce complications and length of stay in hospital associated with procedures, and two (18%) were screening or diagnostic technologies. One study (9%) reported an innovative therapeutic alternative. No studies were identified that truly evaluated the value of the technology in terms of service impact, and the review identified fewer results than expected. CONCLUSIONS: In our experience, service impact modelling is an approach that can support value demonstration for new technologies in relation to impact on a health service or system, and support market access. It was surprising that more examples of service impact modelling were not identified in the published literature. We conclude that service impact models are under-used and/or under-reported in the published literature. Increased use and reporting of service impact models would allow improved understanding of the value of innovative technologies that affect healthcare delivery.