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O11

Non-billable

Pre-existing hypertension with pre-eclampsia

O11 is the ICD-10-CM code for Pre-existing hypertension with pre-eclampsia. It is a non-billable category code — use a more specific child code such as O11.1 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Subcodes
6
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

Includes

  • •conditions in O10 complicated by pre-eclampsia
  • •pre-eclampsia superimposed pre-existing hypertension

Use additional code

  • •code from O10 to identify the type of hypertension

Frequently asked questions

What is ICD-10 code O11?
O11 is the ICD-10-CM code for "Pre-existing hypertension with pre-eclampsia". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O11 a billable code?
No — O11 is a non-billable header code. Use a more specific child code (such as O11.1) for billing.
What are the subcodes of O11?
O11 has 6 more specific child codes, including O11.1, O11.2, O11.3.

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

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