O11
⚠ Non-billable
Pre-existing hypertension with pre-eclampsia
ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium
Code
O11
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Pregnancy, Childbirth and the Puerperium
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code O11?
ICD-10-CM code O11 represents Pre-existing hypertension with pre-eclampsia. It is a non-billable header code requiring a more specific subcategory in the Pregnancy, Childbirth and the Puerperium chapter, effective October 1, 2025 – September 30, 2026.
Is O11 billable?
No. O11 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is O11 in?
O11 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.
Related codes in the O11 category
O11.1
Pre-existing hypertension with pre-eclampsia, first trimester
Billable
O11.2
Pre-existing hypertension with pre-eclampsia, second trimester
Billable
O11.3
Pre-existing hypertension with pre-eclampsia, third trimester
Billable
O11.4
Pre-existing hypertension with pre-eclampsia, complicating childbirth
Billable
O11.5
Pre-existing hypertension with pre-eclampsia, complicating the puerperium
Billable
O11.9
Pre-existing hypertension with pre-eclampsia, unspecified trimester
Billable
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