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O11.2

O11.2Pre-existing hypertension with pre-eclampsia, second trimester

Billable / specific codeICD-10-CM

O11.2 is a billable, specific ICD-10-CM code for pre-existing hypertension with pre-eclampsia, second trimester. It is valid for submission on a claim.

Risk adjustment

O11.2 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

O11.2 is named in 2 Medicare coverage policies 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57189Billing and Coding: Serum Magnesium
  • A57326Billing and Coding: Electrocardiograms

Related codes at this level

Codes that share O11. If O11.2 is not quite right, the correct code is usually one of these.

Questions about O11.2

Is O11.2 a billable ICD-10-CM code?
Yes. O11.2 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O11.2 sit in the tabular list?
Pregnancy, childbirth and the puerperium (O00-O9A), in the block Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.