O31.1 Continuing pregnancy after spontaneous abortion of one fetus or more

Non-billable header with 4 child codes.

Applies from O31 Complications specific to multiple gestation

Excludes2 (not included here)

• delayed delivery of second twin, triplet, etc. (O63.2)
• malpresentation of one fetus or more (O32.9)
• placental transfusion syndromes (O43.0-)

7th character note

• One of the following 7th characters is to be assigned to each code under category O31. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O31 that has a 7th character of 1 through 9.

7th character required

• 0 — not applicable or unspecified
• 1 — fetus 1
• 2 — fetus 2
• 3 — fetus 3
• 4 — fetus 4
• 5 — fetus 5
• 9 — other fetus

Codes under O31.1

• O31.10 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester
• O31.11 Continuing pregnancy after spontaneous abortion of one fetus or more, first trimester
• O31.12 Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester
• O31.13 Continuing pregnancy after spontaneous abortion of one fetus or more, third trimester

Diagnosis Index entries for O31.1

• Pregnancy (single) (uterine) › continuing following › spontaneous abortion of one or more fetus

Nearby codes

• O31.03X2 Papyraceous fetus, third trimester, fetus 2
• O31.03X3 Papyraceous fetus, third trimester, fetus 3
• O31.03X4 Papyraceous fetus, third trimester, fetus 4
• O31.03X5 Papyraceous fetus, third trimester, fetus 5
• O31.03X9 Papyraceous fetus, third trimester, other fetus
• O31.1 Continuing pregnancy after spontaneous abortion of one fetus or more (this code)
• O31.10 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester
• O31.10X0 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, not applicable or unspecified
• O31.10X1 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 1
• O31.10X2 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 2
• O31.10X3 Continuing pregnancy after spontaneous abortion of one fetus or more, unspecified trimester, fetus 3