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O29

O29Complications of anesthesia during pregnancy

Non-billable headerICD-10-CM

O29 is a non-billable header ICD-10-CM code for complications of anesthesia during pregnancy. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

  • complications of anesthesia during labor and delivery (O74.-)
  • complications of anesthesia during the puerperium (O89.-)

Use additional code

Add a secondary code to capture the detail described below.

  • code, if necessary, to identify the complication

Includes

Conditions this code covers.

  • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy

Other codes that can never be billed with O29

These codes carry an Excludes1 note pointing at O29. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O29 alone.

  • T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
  • J95.4Chemical pneumonitis due to anesthesia
  • T88.2Shock due to anesthesia
  • T88.2XXAShock due to anesthesia, initial encounter
  • T88.2XXDShock due to anesthesia, subsequent encounter
  • T88.2XXSShock due to anesthesia, sequela

Risk adjustment

O29 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead O29

9 child codes. Green means billable.

Questions about O29

Is O29 a billable ICD-10-CM code?
No. O29 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does O29 sit in the tabular list?
Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other maternal disorders predominantly related to pregnancy (O20-O29).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.