ICD-10-CM > O00-O9A > O30-O48 > O31 > O31.0 > O31.00 O31.00 Papyraceous fetus, unspecified trimester Non-Billable/Non-Specific Codes O31.00X0..., not applicable or unspecifiedO31.00X1..., fetus 1O31.00X2..., fetus 2O31.00X3..., fetus 3O31.00X4..., fetus 4O31.00X5..., fetus 5O31.00X9..., other fetus