O10.919: Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester
O10.919 is the billable ICD-10-CM diagnosis code for Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester. It is a fully specified code, so it can be reported on a claim (subject to clinical documentation and your payer's rules).
Frequently asked questions
What is ICD-10-CM code O10.919?
O10.919 is the ICD-10-CM diagnosis code for Unspecified pre-existing hypertension complicating pregnancy, unspecified trimester. It belongs to category O10 (Pre-existing hypertension complicating pregnancy, childbirth and the puerperium).
Is O10.919 a billable code?
Yes. O10.919 is a billable, fully specified ICD-10-CM code, so it can be used on a claim (subject to documentation and payer rules).
What category does O10.919 belong to?
O10.919 is part of ICD-10-CM category O10 — Pre-existing hypertension complicating pregnancy, childbirth and the puerperium, which has 72 billable codes.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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