| Grade de Expansion | ICM | TE | ASEBIR Classification |
| From: "Starting the expansion" To: "Hatching/hatched" | A Compacted | A | A |
| B | B | ||
| C | C | ||
| D | D | ||
| B Not Compacted | A | A | |
| B | B | ||
| C | C | ||
| D | D | ||
| C Indifferent | A | A | |
| B | B | ||
| C | C | ||
| D | D | ||
| D Signs of degeneration | A, B, C o D | D | |
| Early blastocyst or cavitated (ZP gross) | C | ||
| Morula | C | ||
| TE: A) Homogeneous, Cohesive and many cells, B) Homogeneous; Fewer cells, C) Few cells, D) Signs of degeneration. | |||
| (ASEBIR, 2015). | |||