ICD-10-CM > O00-O9A > O30-O48 > O31 > O31.2 > O31.22 O31.22 Continuing pregnancy after intrauterine death of one fetus or more, second trimester Non-Billable/Non-Specific Codes O31.22X0..., not applicable or unspecifiedO31.22X1..., fetus 1O31.22X2..., fetus 2O31.22X3..., fetus 3O31.22X4..., fetus 4O31.22X5..., fetus 5O31.22X9..., other fetus