Novel surgical treatments for painful neuromas are increasingly used, but determining which provides the greatest benefit has been difficult due to the inconsistent use of outcome measures. We mapped the current literature of outcome measures used to evaluate peripheral nerve surgery for the management of symptomatic neuromas in patients who underwent an adult-acquired upper extremity amputation (UEA). Medline, Embase, Cochrane, and CINAHL were searched for primary research written in the English language from inception to February 2023. The search yielded 1137 articles, of which 35 were included for final analysis. Studies varied in their assessment of pain, health-related quality of life (HRQOL), neurotrophic measures, psychological and sensorimotor function, highlighting a consensus on crucial domains but also revealing significant heterogeneity in the use and application of outcome measures among primary studies. Our findings highlight the need to establish common standards that reflect the best evidence and unique needs of the UEA population. This includes developing a core outcome set, utilizing multi-center trials, and maintaining flexibility to adapt to ongoing advancements in patient-reported outcome measures (PROMs) research.