- Uterine bleeding from a gestation of less than 20 weeks without any cervical dilatation. It is characterized by vaginal bleeding, lower back discomfort, or midline pelvic cramping and a risk factor for miscarriage.
640 Hemorrhage in early pregnancy 
640.0 Threatened abortion 
640.00 Threatened abortion, unspecified as to episode of care or not applicable convert 640.00 to ICD-10-CM- 640.01 Threatened abortion, delivered, with or without mention of antepartum condition convert 640.01 to ICD-10-CM
640.03 Threatened abortion, antepartum condition or complication convert 640.03 to ICD-10-CM- 640.8 Other specified hemorrhage in early pregnancy
- 640.80 Other specified hemorrhage in early pregnancy, unspecified as to episode of care or not applicable convert 640.80 to ICD-10-CM
- 640.81 Other specified hemorrhage in early pregnancy, delivered, with or without mention of antepartum condition convert 640.81 to ICD-10-CM
- 640.83 Other specified hemorrhage in early pregnancy, antepartum condition or complication convert 640.83 to ICD-10-CM
- 640.9 Unspecified hemorrhage in early pregnancy
640.90 Unspecified hemorrhage in early pregnancy, unspecified as to episode of care or not applicable convert 640.90 to ICD-10-CM- 640.91 Unspecified hemorrhage in early pregnancy, delivered, with or without mention of antepartum condition convert 640.91 to ICD-10-CM
- 640.93 Unspecified hemorrhage in early pregnancy, antepartum condition or complication convert 640.93 to ICD-10-CM
