O13 – Gestational [pregnancy-induced] hypertension without significant proteinuria
ICD-10-CM 2027 diagnosis code · Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
- Code
O13(claims format:O13)- Description
- Gestational [pregnancy-induced] hypertension without significant proteinuria
- Short description
- Gestational hypertension without significant proteinuria
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 15. Pregnancy, childbirth and the puerperium (O00-O9A)
- Block
- O10-O16 Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium
Billable codes under O13
O13 is a header code and cannot be used on claims. Choose the most specific code:
- O13.1 – Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimesterBillable
- O13.2 – Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimesterBillable
- O13.3 – Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimesterBillable
- O13.4 – Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirthBillable
- O13.5 – Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperiumBillable
- O13.9 – Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimesterBillable
Notes for O13
- gestational hypertension NOS
- transient hypertension of pregnancy
Index terms for O13
Entries in the ICD-10-CM alphabetic index that lead to this code:
Frequently asked questions
What is ICD-10 code O13?
O13 is the ICD-10-CM code for gestational [pregnancy-induced] hypertension without significant proteinuria, in the block O10-O16 (Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium).
Is O13 a billable code?
No. O13 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.