Code
Hierarchy
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O00-O9A Pregnancy, childbirth and the puerperium (O00-O9A)
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O60-O77 Complications of labor and delivery (O60-O77)
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O66 Other obstructed labor
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O66.0 Obstructed labor due to shoulder dystocia
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O66.1 Obstructed labor due to locked twins
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O66.2 Obstructed labor due to unusually large fetus
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O66.3 Obstructed labor due to other abnormalities of fetus
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O66.4 Failed trial of labor
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O66.5 Attempted application of vacuum extractor and forceps
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O66.6 Obstructed labor due to other multiple fetuses
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O66.8 Other specified obstructed labor
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O66.9 Obstructed labor, unspecified
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Notes
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CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
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Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
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Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
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1st trimester- less than 14 weeks 0 days
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2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
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3rd trimester- 28 weeks 0 days until delivery
Inclusion Terms
O66.3
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Dystocia due to fetal ascites
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Dystocia due to fetal hydrops
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Dystocia due to fetal meningomyelocele
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Dystocia due to fetal sacral teratoma
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Dystocia due to fetal tumor
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Dystocia due to hydrocephalic fetus
Use Additional
O66.3
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code to identify cause of obstruction
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code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.