O43.9Header code — not billable
Unspecified placental disorder
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O43
- Effective date
- October 1, 2026
Related codes in category O43
O43Placental disordersO43.0Placental transfusion syndromesO43.01Fetomaternal placental transfusion syndromeO43.011Fetomaternal placental transfusion syndrome, first trimesterYesO43.012Fetomaternal placental transfuse syndrome, second trimesterYesO43.013Fetomaternal placental transfusion syndrome, third trimesterYesO43.019Fetomaternal placental transfusion syndrome, unsp trimesterYesO43.02Fetus-to-fetus placental transfusion syndromeO43.021Fetus-to-fetus placental transfuse syndrome, first trimesterYesO43.022Fetus-to-fetus placntl transfuse syndrome, second trimesterYesO43.023Fetus-to-fetus placental transfuse syndrome, third trimesterYesO43.029Fetus-to-fetus placental transfuse syndrome, unsp trimesterYes
Frequently asked questions
What is ICD-10 code O43.9?
O43.9 is an ICD-10-CM diagnosis code for Unspecified placental disorder.
Is O43.9 a billable code?
No. O43.9 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 O43.9 in?
O43.9 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O43.9 become effective?
O43.9 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O43.9?
O43.9 belongs to category O43, 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.