O29.21Header code — not billable
Cerebral anoxia due to anesthesia during pregnancy
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O29
- Effective date
- October 1, 2026
Related codes in category O29
O29Complications of anesthesia during pregnancyO29.0Pulmonary complications of anesthesia during pregnancyO29.01Aspiration pneumonitis due to anesthesia during pregnancyO29.011Aspirat pneumonitis due to anesth during preg, first triYesO29.012Aspirat pneumonitis due to anesth during preg, second triYesO29.013Aspirat pneumonitis due to anesth during preg, third triYesO29.019Aspirat pneumonitis due to anesth during preg, unsp triYesO29.02Pressure collapse of lung due to anesthesia during pregnancyO29.021Pressr collapse of lung due to anesth during preg, first triYesO29.022Pressr collapse of lung d/t anesth during preg, second triYesO29.023Pressr collapse of lung due to anesth during preg, third triYesO29.029Pressr collapse of lung due to anesth during preg, unsp triYes
Frequently asked questions
What is ICD-10 code O29.21?
O29.21 is an ICD-10-CM diagnosis code for Cerebral anoxia due to anesthesia during pregnancy.
Is O29.21 a billable code?
No. O29.21 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 O29.21 in?
O29.21 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O29.21 become effective?
O29.21 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O29.21?
O29.21 belongs to category O29, 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.