Mat care chromsoml abnlt in fetus, Turner Syndrome, fetus 1

This code signifies maternal care provided when a fetus is suspected of having, or has been diagnosed with, Turner Syndrome, a chromosomal abnormality characterized by the absence of all or part of one X chromosome. This diagnosis is made during pregnancy and requires specialized monitoring and management of the maternal and fetal health.

Use this code for encounters where the pregnant patient is receiving care due to a confirmed or suspected diagnosis of Turner Syndrome in the fetus. Documentation should clearly indicate the fetal diagnosis (e.g., via amniocentesis, chorionic villus sampling, or detailed ultrasound findings suggestive of Turner Syndrome) and the ongoing maternal care related to this condition.

• Ensure documentation specifies "fetus 1" if multiple gestations are present; otherwise, this code implies a singleton pregnancy or the first identified affected fetus.
• Do not use this code if the chromosomal abnormality is not specifically Turner Syndrome; refer to other O35.1 subcategories for different chromosomal issues.
• This code is a maternal condition affecting the fetus; it should be sequenced as a primary diagnosis when the focus of the encounter is the maternal care for this fetal condition.