O10.1

Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium

Not billable — category only FY2026 2025-10-01 → 2026-09-30

Exclusions 6 never code together

O10code

Excludes2

pre-existing hypertension with superimposed pre-eclampsia complicating pregnancy, childbirth and the puerperium (O11.-)O11.-

Excludes1

Excludes2

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 10

O10code

Includes

pre-existing hypertension with pre-existing proteinuria complicating pregnancy, childbirth and the puerperium

Inclusion terms

Any condition in I11 specified as a reason for obstetric care during pregnancy, childbirth or the puerperiumI11 I11

Use additional code

Notes

CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
1st trimester- less than 14 weeks 0 days
2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
3rd trimester- 28 weeks 0 days until delivery

Use additional code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A

Index entries leading here filed at null

No alphabetic index entry points at this code.

Alongside this code 5 same parent — O10

Subordinate codes 3

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2024–FY2027.