COMPLICATIONS MAINLY RELATED TO PREGNANCY (640-649)
Includes:
the listed conditions even if they arose or were present during labor, delivery, or the puerperium
The following fifth-digit subclassification is for use with categories 640-649 to denote the current episode of care:
0 unspecified as to episode of care or not applicable
1 delivered, with or without mention of antepartum condition
Antepartum condition with delivery
Delivery NOS (with mention of antepartum complication during current episode of care)
Intrapartum
obstetric condition (with mention of antepartum complication during current episode of care)
Pregnancy, delivered (with mention of antepartum complication during current episode of care)
2 delivered, with mention of postpartum complication
Delivery with mention of puerperal complication during current episode of care
3 antepartum condition or complication
Antepartum obstetric condition, not delivered during the current episode of care
4 postpartum condition or complication
Postpartum or puerperal obstetric condition or complication following delivery that occurred:
during previous episode of care
outside hospital, with subsequent admission for observation or care
644 Early or threatened labor
Requires fifth digit; valid digits are in [brackets] under each code. see beginning of section 640-649 for definitions.
644.0: Threatened premature labor
[0,3]
Premature labor after 22 weeks, but before 37 completed weeks of gestation without delivery
Excludes:
that occurring before 22 completed weeks of gestation (640.0)
644.1: Other threatened labor
[0,3]
False labor:
NOS without delivery
after 37 completed weeks of gestation without delivery
Threatened labor NOS without delivery
644.2: Early onset of delivery
[0-1]
Onset (spontaneous) of delivery before 37 completed weeks of gestation
Premature labor with onset of delivery before 37 completed weeks of gestation

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