The CLINICAL INVESTIGATION RESULT ITEM for the amnionicity status for the baby (the number of amnions (inner membranes) that surround babies in a multiple pregnancy).
Note: one amnion is monoamniotic; two amnions are diamniotic.
National Codes:
| 1 | Monoamniotic |
| 2 | Diamniotic |
| 8 | Other (in cases of triplets or more) |