Being physically active is one of the most important lifestyle behaviors people can engage in to maintain physical and mental health and well-being.  Regular physical activity is both health-promoting and important for chronic disease and infectious disease treatment and prevention with numerous benefits that contribute to a disability-free lifespan.  Active living can also enhance social connectedness, quality of life, and environmental sustainability. Currently in the US, one in four adults are physically inactive with increasing prevalence across some geographies and in certain race/ethnicities.  Only 26 percent of men, 19 percent of women, and 20 percent of adolescents, report sufficient activity to meet the relevant aerobic and muscle-strengthening physical activity guidelines. The current levels of physical inactivity in the US population create $117 billion in annual healthcare costs and contribute about 10 percent of premature mortality. Even so, current population physical activity levels avert 3.9 million premature deaths globally and 140,200 premature deaths in the US on an annual basis. This project will create and encourage the adoption of an implementation guide that standardizes: - the capture of information about a patient's physical activity level, - the diagnosis of patients whose level of physical activity is negatively impacting their current and future health and wellbeing, - allows ordering interventions to enhance patient's physical activity, - enables billing insurance for those interventions, and - supports the measurement of the impact of those interventions. The intention is to ensure that supporting and encouraging patient physical activity becomes an integral part of patient health management. The project is sponsored by the U.S. [Physical Activity Alliance]( https://paamovewithus.org ). The project is similar in nature to Gravity's SDOH (Social Determinants of Health) IG. It seeks to support incorporation of aspects of patient lifestyle circumstances that the literature clearly shows are deeply intertwined with health outcomes, but which are not widely tracked and managed by existing systems or provider practice. It will also involve enabling data exchange between clinical systems and new types of service delivery providers that have not historically been part of the patient care loop - e.g. physio therapists, personal trainers, lifestyle coaches, etc. Artifacts and workflows will be based on U.S. Core and Gravity implementation guides. While this project absolutely has international relevance, the sponsor is U.S.-based and expects to leverage U.S.-specific terminologies, such as CPT codes. Project content should certainly be internationalizable.