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ICD-10-CM Code

Diseases of the circulatory system complicating pregnancy, second trimester

O99.4

Excludes1: peripartum cardiomyopathy (O90.3)

Excludes2: hypertensive disorders (O10-O16)
obstetric embolism (O88.-)
venous complications and cerebrovenous sinus thrombosis in labor, childbirth and the puerperium (O87.-)
venous complications and cerebrovenous sinus thrombosis in pregnancy (O22.-)

O99

Includes: conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care

Excludes2: when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

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