Abstract Background/Aims Fracture Liaison Services (FLSs) are recommended to deliver best practice in secondary fracture prevention. As part of the iFraP (Improving uptake of Fracture Prevention drug Treatments) research programme this study aimed to 1) co-design content for a ‘model FLS consultation’ and 2) gain consensus on the appropriateness of osteoporosis clinical guidelines in the context of FLSs. Methods Three rounds of modified Delphi survey were sent to patients with osteoporosis and/or fragility fractures, carers, and clinicians. Participants were presented with potential consultation content derived from an evidence synthesis of current guidelines, frameworks and theories of shared decision-making, communication and medicine adherence, and stakeholder consultation. Participants were asked to rate their perception of the importance of each statement on a 5-point Likert scale and elaborate using free-text boxes. In Round 2, participants were shown mean scores of importance from Round 1. Statements identified as of ‘low importance’ at the end of Rounds 1 and 2 were discussed by the study team, including patient contributors, and were removed or amended. In Round 3, participants were asked whether the statement was ‘essential’ or ‘optional’ in a time-limited FLS consultation. Percentage agreement with each statement was ranked. The threshold for ‘essential’ versus ‘optional’ was determined by the study team. Results 391 invitations to participate were sent, with 72, 49, and 52 responders to Rounds 1, 2 and 3 respectively. Throughout Rounds 1-3 participants considered 122 statements. By Round 3, 81 statements were deemed essential, with an additional 14 optional statements. Essential statements were distilled into 18 recommendations constituting the ‘model FLS consultation’. Statements related to stages of the consultation, including: introductions; gather information; consider therapeutic options; elicit patient perceptions; establish shared decision-making preferences; share information about condition and treatment; check understanding; and signpost next steps. There was consensus that FLS clinicians should discuss the benefits and risks of oral and intravenous bisphosphonates and denosumab. Optional consultation content included a statement suggesting clinicians should observe the patient to look for signs of fractures in their spine, with free-text responses suggesting that FLS clinicians may not ‘be best qualified’ to perform physical examinations. Removed statements included those relating to the discussion of Hormone Replacement Therapy, Raloxifene and Teriparatide, with free-text statements suggesting that ‘specialists’ (e.g. Rheumatologists) should discuss these medications. Additionally, statements that described the potential consequences of fracture (e.g. ‘the clinician should explain that one in ten patients with a hip fracture will die within 12 months of fracture.’) were removed. Free-text comments described these statements as potentially ‘scary’. Conclusion The Delphi survey has informed iFraP intervention development by highlighting essential and optional FLS consultation content. Findings also provide insight into aspects of current osteoporosis clinical guidelines deemed appropriate in nurse/allied health professional led FLSs. Disclosure L. Bullock: None. C. Jinks: Grants/research support; CJ is part funded by the NIHR Applied Research Collaboration (ARC) West Midlands. F. Crawford-Manning: Grants/research support; FCM is part funded by the NIHR Clinical Research Network Scholar Programme. S. Leyland: None. J. Fleming: None. E.M. Clark: None. E. Cottrell: None. J. Edwards: Grants/research support; JE is an NIHR Academic Clinical Lecturer in Primary Care (CL-2016-10-003). Z. Paskins: Grants/research support; ZP is funded by the NIHR, Clinician Scientist Award (CS-2018-18-ST2-010)/NIHR Academy.