Many modern med kit pouches, like the DARK Pouches from Dark Angle Medical, do not have any type of medical identification on the pouch. Instead, they typically have a loop field so that the user can add the identification of their choosing.
Dark Angel Medical is now offering their own line of Med Kit Identifier patches in four colors so you can choose the more visible and readily identifiable red cross or a subdued color. These PVC patches measure 1″ x 1″ so they should fit even the most compact pouches with loop fields.