Code
Hierarchy
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O00-O9A Pregnancy, childbirth and the puerperium (O00-O9A)
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O20-O29 Other maternal disorders predominantly related to pregnancy (O20-O29)
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O28 Abnormal findings on antenatal screening of mother
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O28.0 Abnormal hematological finding on antenatal screening of mother
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O28.1 Abnormal biochemical finding on antenatal screening of mother
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O28.2 Abnormal cytological finding on antenatal screening of mother
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O28.3 Abnormal ultrasonic finding on antenatal screening of mother
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O28.4 Abnormal radiological finding on antenatal screening of mother
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O28.5 Abnormal chromosomal and genetic finding on antenatal screening of mother
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O28.8 Other abnormal findings on antenatal screening of mother
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O28.9 Unspecified abnormal findings on antenatal screening of mother
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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.
Excludes 1
Excludes 2
- O30-O48 Maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
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maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)