Fetal anemia and thrombocytopenia, unsp trimester, fetus 3

This code signifies the diagnosis of anemia and thrombocytopenia in the third fetus of a multiple gestation pregnancy, where the specific trimester of diagnosis is not documented. It indicates a hematologic abnormality affecting the developing fetus, potentially leading to complications such as hydrops fetalis or bleeding disorders.

Use this code when documentation clearly identifies fetal anemia and thrombocytopenia in the third fetus of a multifetal pregnancy, and the trimester of diagnosis is not specified. This typically arises from antenatal diagnostic procedures such as fetal blood sampling or ultrasound findings suggestive of these conditions. The medical record must explicitly state "fetus 3" or similar identification.

• Ensure the documentation specifies "fetus 3" to accurately assign this code for multiple gestations.
• If the trimester is known, a more specific code from the O36.82- series should be used.
• Always sequence this code after the primary obstetric complication or condition necessitating the diagnosis.