Chronic Hypertension in Pregnancy (2Q 2025 Coding Clinic)

When a pregnant patient is diagnosed with ‘chronic hypertension’, assign a code from category O10, Pre-existing hypertension complicating pregnancy, childbirth and the puerperium. Chronic hypertension in pregnancy is synonymous with pre-existing hypertension. If there is no additional documentation regarding the specific type of hypertension, a code from subcategory O10.91-, Unspecified pre-existing hypertension complicating pregnancy, is assigned.

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