O13: Gestational [pregnancy-induced] hypertension without significant proteinuria
Codes under O13 (Gestational [pregnancy-induced] hypertension without significant proteinuria). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| O13.1 | Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester | ✓ |
| O13.1 | Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester | ✓ |
| O13.2 | Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester | ✓ |
| O13.2 | Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester | ✓ |
| O13.3 | Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester | ✓ |
| O13.3 | Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester | ✓ |
| O13.4 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth | ✓ |
| O13.4 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth | ✓ |
| O13.5 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium | ✓ |
| O13.5 | Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium | ✓ |
| O13.9 | Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester | ✓ |
| O13.9 | Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester | ✓ |
Frequently asked questions
What is ICD-10-CM code O13?
O13 is an ICD-10-CM category covering Gestational [pregnancy-induced] hypertension without significant proteinuria. It contains 12 more specific diagnosis codes, 12 of which are billable.
Is O13 a billable code?
No — O13 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example O13.1 — Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester). 12 of the 12 codes under O13 are billable.
What codes fall under O13?
O13 includes O13.1, O13.1, O13.2, O13.2, O13.3, plus 7 more. See the full list with descriptions and billable status above.
More free billing tools: all ICD-10 categories · ICD-10 search · denial codes · Medicare fees
Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
Code the diagnosis right
Join providers across the country delivering modern virtual care with CareNiva. Free to start, ready in minutes.
100% Satisfaction Guaranteed — try it risk-free