2026 ICD-10-CM Diagnosis Code O29Complications of anesthesia during pregnancy

ICD-10-CM Codes›O00-O9A›O20-O29›O29

ICD-10-CM O29
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

O29 is a non-billable ICD-10-CM category code for complications of anesthesia during pregnancy, so it cannot be submitted on claims. Use a more specific code from this category instead, such as O29.011, O29.012, O29.013, and O29.019.

Code Identity

ICD-10-CM Code
O29
Billable Status
No — Non-Billable Category
Code Describes
Complications of anesthesia during pregnancy
Chapter
O20-O29
Other maternal disorders predominantly related to pregnancy

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO20-O29Other maternal disorders predominantly related to pregnancy
CategoryO29Complications of anesthesia during pregnancy
This CodeO29Complications of anesthesia during pregnancy

Specific Coding for Complications of anesthesia during pregnancyOverview

Non-specific codes like O29 require more characters. Use one of these billable codes instead:

  • O29.0 for Pulmonary complications of anesthesia during pregnancy

  • O29.01 for Aspiration pneumonitis due to anesthesia during pregnancy

  • O29.02 for Pressure collapse of lung due to anesthesia during pregnancy

  • O29.09 for Other pulmonary complications of anesthesia during pregnancy

  • O29.1 for Cardiac complications of anesthesia during pregnancy

  • O29.11 for Cardiac arrest due to anesthesia during pregnancy

  • O29.12 for Cardiac failure due to anesthesia during pregnancy

  • O29.19 for Other cardiac complications of anesthesia during pregnancy

  • O29.2 for Central nervous system complications of anesthesia during pregnancy

  • O29.21 for Cerebral anoxia due to anesthesia during pregnancy

  • O29.29 for Other central nervous system complications of anesthesia during pregnancy

  • O29.3 for Toxic reaction to local anesthesia during pregnancy

  • O29.3X for Toxic reaction to local anesthesia during pregnancy

  • O29.4 for Spinal and epidural anesthesia induced headache during pregnancy

  • Use O29.40 for Spinal and epidural anesthesia induced headache during pregnancy, unspecified trimester

  • Use O29.41 for Spinal and epidural anesthesia induced headache during pregnancy, first trimester

  • Use O29.42 for Spinal and epidural anesthesia induced headache during pregnancy, second trimester

  • Use O29.43 for Spinal and epidural anesthesia induced headache during pregnancy, third trimester

  • O29.5 for Other complications of spinal and epidural anesthesia during pregnancy

  • O29.5X for Other complications of spinal and epidural anesthesia during pregnancy

  • O29.6 for Failed or difficult intubation for anesthesia during pregnancy

  • Use O29.60 for Failed or difficult intubation for anesthesia during pregnancy, unspecified trimester

  • Use O29.61 for Failed or difficult intubation for anesthesia during pregnancy, first trimester

  • Use O29.62 for Failed or difficult intubation for anesthesia during pregnancy, second trimester

  • Use O29.63 for Failed or difficult intubation for anesthesia during pregnancy, third trimester

  • O29.8 for Other complications of anesthesia during pregnancy

  • O29.8X for Other complications of anesthesia during pregnancy

  • O29.9 for Unspecified complication of anesthesia during pregnancy

  • Use O29.90 for Unspecified complication of anesthesia during pregnancy, unspecified trimester

  • Use O29.91 for Unspecified complication of anesthesia during pregnancy, first trimester

  • Use O29.92 for Unspecified complication of anesthesia during pregnancy, second trimester

  • Use O29.93 for Unspecified complication of anesthesia during pregnancy, third trimester

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

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

Use Additional Code

  • code, if necessary, to identify the complication

Type 2 Excludes

  • complications of anesthesia during labor and delivery O74
  • complications of anesthesia during the puerperium O89

Patient EducationClinical

Anesthesia

Anesthesia is the use of medicines, called anesthetics, to prevent pain during surgery and other medical procedures. Medicine may be given by injection, inhalation, topical lotion, spray, eye drops, or a skin patch.

The full article covers:

  • What is anesthesia?
  • What is anesthesia used for?
  • What are the types of anesthesia?
  • What are the risks of anesthesia?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About O29Overview

Is O29 (Complications of anesthesia during pregnancy) a billable code?

No. This is a category header that groups the codes for complications of anesthesia during pregnancy, and headers cannot be submitted on claims. Claims for complications of anesthesia during pregnancy need a more specific code from this category, such as O29.011, O29.012, and O29.013.