O11 Pre-existing hypertension with pre-eclampsia

The ICD-10-CM code for Pre-existing hypertension with pre-eclampsia is O11 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

15: Pregnancy, childbirth and the puerperium (O00-O9A)

Section

O10-O16: Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)

Category O11

7 codes (6 billable)

FY2026 Status

Stable since FY2024

Official Coding Guidelines

POA indicator for obstetrical conditions

Obstetrical conditions Whether or not the patient delivers during the current hospitalization does not affect assignment of the POA indicator. The determining factor for POA assignment is whether the pregnancy complication or obstetrical condition described by the code was present at the time of admission or not. If the pregnancy complication or obstetrical condition was present on admission (e.g., patient admitted in preterm labor), assign “Y”. If the pregnancy complication or obstetrical condition was not present on admission (e.g., 2nd degree laceration during delivery, postpartum hemorrhage that occurred during current hospitalization, fetal distress develops after admission), assign “N”. If the obstetrical code includes more than one diagnosis and any of the diagnoses identified by the code were not present on admission assign “N”. (e.g., Category O11, Pre-existing hypertension with pre-eclampsia)

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool

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Reference O11 with the canonical source and edition:

O11 — Pre-existing hypertension with pre-eclampsia. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/O11

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