O88.21Header code — not billable
Thromboembolism in pregnancy
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O88
- Effective date
- October 1, 2026
Related codes in category O88
O88Obstetric embolismO88.0Obstetric air embolismO88.01Obstetric air embolism in pregnancyO88.011Air embolism in pregnancy, first trimesterYesO88.012Air embolism in pregnancy, second trimesterYesO88.013Air embolism in pregnancy, third trimesterYesO88.019Air embolism in pregnancy, unspecified trimesterYesO88.02Air embolism in childbirthYesO88.03Air embolism in the puerperiumYesO88.1Amniotic fluid embolismO88.11Amniotic fluid embolism in pregnancyO88.111Amniotic fluid embolism in pregnancy, first trimesterYes
Frequently asked questions
What is ICD-10 code O88.21?
O88.21 is an ICD-10-CM diagnosis code for Thromboembolism in pregnancy.
Is O88.21 a billable code?
No. O88.21 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 O88.21 in?
O88.21 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O88.21 become effective?
O88.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O88.21?
O88.21 belongs to category O88, 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.