From Bulbapedia, the community-driven Pokémon encyclopedia.
This article lists all cards featured in the Pokémon Trading Card Game compatible with the e-Reader peripheral and their associated card ID.
The card IDs are ordered in a similar manner to the Japanese ordering of cards during the e-Card Era: by type, National Pokédex number, and ascending rarity. This ordering remains the same for the early English EX Series expansions that continued to support the e-Reader, despite the difference between the Japanese and English expansion ordering systems at the time.
The card IDs increment alphabetically based on Japanese releases, thus the English e-Card Series expansions encompass two sets of IDs due to their consolidation. There is a clash of language-specific card IDs at 'M' due to the handful of cards included in the English EX Team Magma vs Team Aqua expansion, the Japanese McDonald's Pokémon-e Minimum Pack, and select cards used for the Sample Set. It is unknown as to why the English releases bypassed 'J' and 'L' during the EX Series.
List of card IDs