O01Header code — not billable
Hydatidiform mole
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O01
- Effective date
- October 1, 2026
Related codes in category O01
Frequently asked questions
What is ICD-10 code O01?
O01 is an ICD-10-CM diagnosis code for Hydatidiform mole.
Is O01 a billable code?
No. O01 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 O01 in?
O01 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O01 become effective?
O01 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O01?
O01 belongs to category O01, which includes 3 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.