Abnormal hematolog finding on antenatal screening of mother

This code signifies an abnormal blood test result identified during a pregnant patient's routine prenatal care. It indicates a deviation from normal hematological parameters, such as red blood cell count, hemoglobin, or hematocrit, detected before childbirth. This finding requires further investigation to determine its underlying cause and potential impact on maternal and fetal health.

Apply this code when documentation indicates an abnormal hematological finding from antenatal screening, such as anemia, polycythemia, or abnormal platelet counts, in a pregnant patient. This code is appropriate when the specific cause of the abnormality has not yet been definitively diagnosed. Documentation should clearly state "abnormal hematological finding" or similar language from a prenatal lab report.

• Do not use this code if a definitive diagnosis for the hematological abnormality (e.g., iron deficiency anemia) has been established; instead, code the specific condition.
• This code is for the finding itself, not the treatment or management of the finding.
• Sequence this code as a secondary diagnosis when the primary reason for the encounter is routine prenatal care (Z34.xx).