Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecified

O31.12X0 (“Continuing pregnancy after spontaneous abortion of one fetus or more, second trimester, not applicable or unspecified”) is a diagnosis code that identifies a specific condition, injury, or finding on a medical claim in the ICD-10-CM code set. Whether it is billed — and whether a payer covers it — depends on the clinical setting, documentation, and plan rules.