ICD-10-CM > O00-O9A > O30-O48 > O31 > O31.2 O31.2 Continuing pregnancy after intrauterine death of one fetus or more Non-Billable/Non-Specific Codes O31.20Continuing pregnancy after intrauterine death of one fetus or more, unspecified trimesterO31.20X0..., not applicable or unspecifiedO31.20X1..., fetus 1O31.20X2..., fetus 2O31.20X3..., fetus 3O31.20X4..., fetus 4O31.20X5..., fetus 5O31.20X9..., other fetusO31.21Continuing pregnancy after intrauterine death of one fetus or more, first trimesterO31.21X0..., not applicable or unspecifiedO31.21X1..., fetus 1O31.21X2..., fetus 2O31.21X3..., fetus 3O31.21X4..., fetus 4O31.21X5..., fetus 5O31.21X9..., other fetusO31.22Continuing pregnancy after intrauterine death of one fetus or more, second trimesterO31.22X0..., not applicable or unspecifiedO31.22X1..., fetus 1O31.22X2..., fetus 2O31.22X3..., fetus 3O31.22X4..., fetus 4O31.22X5..., fetus 5O31.22X9..., other fetusO31.23Continuing pregnancy after intrauterine death of one fetus or more, third trimesterO31.23X0..., not applicable or unspecifiedO31.23X1..., fetus 1O31.23X2..., fetus 2O31.23X3..., fetus 3O31.23X4..., fetus 4O31.23X5..., fetus 5O31.23X9..., other fetus