CONCLUSION
The results of several reviewed studies show that the CPs with the highest accuracy to identify TG patients contained diagnosis codes and another component, such as and procedural and medication codes for claims data and key text-strings for EHR data. However, researchers have been able to find most TG patients within their electronic healthcare databases through diagnosis codes alone, although differences may occur depending on the data structure of the health system utilized. These findings support the conclusion that CPs are essential to identifying TG patients when self-reported gender identity is not available to understand TG population health patterns.