O29.21 – Cerebral anoxia due to anesthesia during pregnancy

ICD-10-CM 2027 diagnosis code · Other maternal disorders predominantly related to pregnancy

Non-billable header

ICD-10-CM code O29.21
Code
O29.21 (claims format: O2921)
Description
Cerebral anoxia due to anesthesia during pregnancy
Billable
No – use a more specific code below
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block
O20-O29 Other maternal disorders predominantly related to pregnancy
Parent codes
O29 › O29.2

Billable codes under O29.21

O29.21 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

O29 – Complications of anesthesia during pregnancy

Includes:
  • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
Excludes2 (not included here):
  • complications of anesthesia during labor and delivery (O74.-)
  • complications of anesthesia during the puerperium (O89.-)
Use additional code:
  • code, if necessary, to identify the complication

Block O20-O29

Excludes2 (not included here):
  • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)

Index terms for O29.21

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in O29.2

Frequently asked questions

What is ICD-10 code O29.21?

O29.21 is the ICD-10-CM code for cerebral anoxia due to anesthesia during pregnancy, in the block O20-O29 (Other maternal disorders predominantly related to pregnancy).

Is O29.21 a billable code?

No. O29.21 is a header code with more specific child codes; report one of the billable codes listed above.

What category does O29.21 belong to?

It belongs to category O29 – Complications of anesthesia during pregnancy.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.