All ICD10 Codes

O11

Non-Billable
ChapterO00–O9A
Rankcategory
Official Description

Pre-existing hypertension with pre-eclampsia

Use a more specific code (6 billable)
O11.1Pre-existing hypertension with pre-eclampsia, first trimesterO11.2Pre-existing hypertension with pre-eclampsia, second trimesterO11.3Pre-existing hypertension with pre-eclampsia, third trimesterO11.4Pre-existing hypertension with pre-eclampsia, complicating childbirthO11.5Pre-existing hypertension with pre-eclampsia, complicating the puerperiumO11.9Pre-existing hypertension with pre-eclampsia, unspecified trimester
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

CH15 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • supervision of normal pregnancy (Z34.-)
Excludes2(Not included here. Code separately if applicable.)
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
Use Additional Code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Instructional Notes

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

Clinical Hierarchy

BillableHas subcodes
CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O10-O16Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)
O11Pre-existing hypertension with pre-eclampsiaNot billable
O11.1Pre-existing hypertension with pre-eclampsia, first trimesterBillable
O11.2Pre-existing hypertension with pre-eclampsia, second trimesterBillable
O11.3Pre-existing hypertension with pre-eclampsia, third trimesterBillable
O11.4Pre-existing hypertension with pre-eclampsia, complicating childbirthBillable
O11.5Pre-existing hypertension with pre-eclampsia, complicating the puerperiumBillable
O11.9Pre-existing hypertension with pre-eclampsia, unspecified trimesterBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O11:

chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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