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O10.01

Non-billable

Pre-existing essential hypertension complicating pregnancy

O10.01 is the ICD-10-CM code for Pre-existing essential hypertension complicating pregnancy. It is a non-billable category code — use a more specific child code such as O10.011 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Parent
O10.0
Subcodes
4
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code O10.01?
O10.01 is the ICD-10-CM code for "Pre-existing essential hypertension complicating pregnancy". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O10.01 a billable code?
No — O10.01 is a non-billable header code. Use a more specific child code (such as O10.011) for billing.
What are the subcodes of O10.01?
O10.01 has 4 more specific child codes, including O10.011, O10.012, O10.013.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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