Code
Hierarchy
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O00-O9A Pregnancy, childbirth and the puerperium (O00-O9A)
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O10-O16 Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)
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O13 Gestational [pregnancy-induced] hypertension without significant proteinuria
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O13.1 Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
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O13.2 Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
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O13.3 Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
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O13.4 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
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O13.5 Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
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O13.9 Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester
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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
Use Additional
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code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Includes
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gestational hypertension NOS
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transient hypertension of pregnancy