O26.4Header code — not billable
Herpes gestationis
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O26
- Effective date
- October 1, 2026
Related codes in category O26
O26Maternal care for oth conditions predom related to pregnancyO26.0Excessive weight gain in pregnancyO26.00Excessive weight gain in pregnancy, unspecified trimesterYesO26.01Excessive weight gain in pregnancy, first trimesterYesO26.02Excessive weight gain in pregnancy, second trimesterYesO26.03Excessive weight gain in pregnancy, third trimesterYesO26.1Low weight gain in pregnancyO26.10Low weight gain in pregnancy, unspecified trimesterYesO26.11Low weight gain in pregnancy, first trimesterYesO26.12Low weight gain in pregnancy, second trimesterYesO26.13Low weight gain in pregnancy, third trimesterYesO26.2Pregnancy care for patient with recurrent pregnancy loss
Frequently asked questions
What is ICD-10 code O26.4?
O26.4 is an ICD-10-CM diagnosis code for Herpes gestationis.
Is O26.4 a billable code?
No. O26.4 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is O26.4 in?
O26.4 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O26.4 become effective?
O26.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O26.4?
O26.4 belongs to category O26, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.