O13.4
Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 5 never code together
O00-O9Achapter
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 9
O13code
Includes
- gestational hypertension NOS
- transient hypertension of pregnancy
O00-O9Achapter
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 1
Alongside this code 5 same parent — O13
O13.1 Gestational htn w/o significant proteinuria, first trimester O13.2 Gestatnl htn w/o significant proteinuria, second trimester O13.3 Gestational htn w/o significant proteinuria, third trimester O13.5 Gestatnl htn without significant protein, comp the puerp O13.9 Gestational htn w/o significant proteinuria, unsp trimester
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.