What diagnosis code should be used for a normal routine pregnancy?

The diagnosis code for a normal routine pregnancy is O80. This code specifically refers to "Encounter for care in normal pregnancy." It indicates that the pregnant individual is receiving routine prenatal care and that there are no complications associated with the pregnancy.

In ICD-10-CM coding, it is important to use the most accurate code that describes the patient's condition, and O80 provides a clear categorization of a normal, straightforward pregnancy. Other codes within the O category are more appropriate for pregnancies with complications or specific conditions.

In contrast, options such as O09 pertain to high-risk pregnancy encounters, Z34 codes mainly relate to routine pregnancy care without complications but are often used for specific encounters in subsequent trimesters, while A00 is associated with infectious diseases like cholera, completely unrelated to pregnancy. Thus, O80 is the most appropriate choice for documenting a normal routine pregnancy.