O29Not billable, use a more specific code below
Complications of anesthesia during pregnancy
In Other maternal disorders predominantly related to pregnancy (O20-O29), chapter 15: Pregnancy, Childbirth and the Puerperium
56 billable codes under O29: none are a CC or MCC; none map to an HCC.
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Instructional notes
Includes: conditions that are coded here
- maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
Excludes2: not included here, code separately if applicable
Use additional code: add a second code for this, listed after this one
- code, if necessary, to identify the complication
Also applies, from Other maternal disorders predominantly related to pregnancy (O20-O29)
These notes sit on O20-O29 and apply to every code under it, including O29.
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Coding of obstetric cases with O00-O9A codes: sequencing priority, trimester and fetus characters, principal diagnosis selection, delivery outcome, and pregnancy-related complications.
- General Rules for Obstetric Cases (page 63)
- Selection of OB Principal or First-listed Diagnosis (page 64)
- Pre-existing conditions versus conditions due to the pregnancy (page 65)
- Pre-existing hypertension in pregnancy (page 66)
- Fetal Conditions Affecting the Management of the Mother (page 66)
- HIV Infection in Pregnancy, Childbirth and the Puerperium (page 66)
- Diabetes mellitus in pregnancy (page 66)
- Long term use of insulin and oral hypoglycemics (page 67)
All codes under O29
O29 can't be used on a claim. Pick a billable code below; grey headings group them.
- O29.0Pulmonary complications of anesthesia during pregnancy
- O29.01Aspiration pneumonitis due to anesthesia during pregnancy
- O29.011Aspiration pneumonitis due to anesthesia during pregnancy, first trimester
- O29.012Aspiration pneumonitis due to anesthesia during pregnancy, second trimester
- O29.013Aspiration pneumonitis due to anesthesia during pregnancy, third trimester
- O29.019Aspiration pneumonitis due to anesthesia during pregnancy, unspecified trimester
- O29.02Pressure collapse of lung due to anesthesia during pregnancy
- O29.021Pressure collapse of lung due to anesthesia during pregnancy, first trimester
- O29.022Pressure collapse of lung due to anesthesia during pregnancy, second trimester
- O29.023Pressure collapse of lung due to anesthesia during pregnancy, third trimester
- O29.029Pressure collapse of lung due to anesthesia during pregnancy, unspecified trimester
- O29.09Other pulmonary complications of anesthesia during pregnancy
- O29.091Other pulmonary complications of anesthesia during pregnancy, first trimester
- O29.092Other pulmonary complications of anesthesia during pregnancy, second trimester
- O29.093Other pulmonary complications of anesthesia during pregnancy, third trimester
- O29.099Other pulmonary complications of anesthesia during pregnancy, unspecified trimester
- O29.1Cardiac complications of anesthesia during pregnancy
- O29.11Cardiac arrest due to anesthesia during pregnancy
- O29.111Cardiac arrest due to anesthesia during pregnancy, first trimester
- O29.112Cardiac arrest due to anesthesia during pregnancy, second trimester
- O29.113Cardiac arrest due to anesthesia during pregnancy, third trimester
- O29.119Cardiac arrest due to anesthesia during pregnancy, unspecified trimester
- O29.12Cardiac failure due to anesthesia during pregnancy
- O29.121Cardiac failure due to anesthesia during pregnancy, first trimester
- O29.122Cardiac failure due to anesthesia during pregnancy, second trimester
- O29.123Cardiac failure due to anesthesia during pregnancy, third trimester
- O29.129Cardiac failure due to anesthesia during pregnancy, unspecified trimester
- O29.19Other cardiac complications of anesthesia during pregnancy
- O29.191Other cardiac complications of anesthesia during pregnancy, first trimester
- O29.192Other cardiac complications of anesthesia during pregnancy, second trimester
- O29.193Other cardiac complications of anesthesia during pregnancy, third trimester
- O29.199Other cardiac complications of anesthesia during pregnancy, unspecified trimester
- O29.2Central nervous system complications of anesthesia during pregnancy
- O29.21Cerebral anoxia due to anesthesia during pregnancy
- O29.211Cerebral anoxia due to anesthesia during pregnancy, first trimester
- O29.212Cerebral anoxia due to anesthesia during pregnancy, second trimester
- O29.213Cerebral anoxia due to anesthesia during pregnancy, third trimester
- O29.219Cerebral anoxia due to anesthesia during pregnancy, unspecified trimester
- O29.29Other central nervous system complications of anesthesia during pregnancy
- O29.291Other central nervous system complications of anesthesia during pregnancy, first trimester
- O29.292Other central nervous system complications of anesthesia during pregnancy, second trimester
- O29.293Other central nervous system complications of anesthesia during pregnancy, third trimester
- O29.299Other central nervous system complications of anesthesia during pregnancy, unspecified trimester
- O29.3Toxic reaction to local anesthesia during pregnancy
- O29.3XToxic reaction to local anesthesia during pregnancy
- O29.3X1Toxic reaction to local anesthesia during pregnancy, first trimester
- O29.3X2Toxic reaction to local anesthesia during pregnancy, second trimester
- O29.3X3Toxic reaction to local anesthesia during pregnancy, third trimester
- O29.3X9Toxic reaction to local anesthesia during pregnancy, unspecified trimester
- O29.4Spinal and epidural anesthesia induced headache during pregnancy
- O29.40Spinal and epidural anesthesia induced headache during pregnancy, unspecified trimester
- O29.41Spinal and epidural anesthesia induced headache during pregnancy, first trimester
- O29.42Spinal and epidural anesthesia induced headache during pregnancy, second trimester
- O29.43Spinal and epidural anesthesia induced headache during pregnancy, third trimester
- O29.5Other complications of spinal and epidural anesthesia during pregnancy
- O29.5XOther complications of spinal and epidural anesthesia during pregnancy
- O29.5X1Other complications of spinal and epidural anesthesia during pregnancy, first trimester
- O29.5X2Other complications of spinal and epidural anesthesia during pregnancy, second trimester
- O29.5X3Other complications of spinal and epidural anesthesia during pregnancy, third trimester
- O29.5X9Other complications of spinal and epidural anesthesia during pregnancy, unspecified trimester
- O29.6Failed or difficult intubation for anesthesia during pregnancy
- O29.60Failed or difficult intubation for anesthesia during pregnancy, unspecified trimester
- O29.61Failed or difficult intubation for anesthesia during pregnancy, first trimester
- O29.62Failed or difficult intubation for anesthesia during pregnancy, second trimester
- O29.63Failed or difficult intubation for anesthesia during pregnancy, third trimester
- O29.8Other complications of anesthesia during pregnancy
- O29.8XOther complications of anesthesia during pregnancy
- O29.8X1Other complications of anesthesia during pregnancy, first trimester
- O29.8X2Other complications of anesthesia during pregnancy, second trimester
- O29.8X3Other complications of anesthesia during pregnancy, third trimester
- O29.8X9Other complications of anesthesia during pregnancy, unspecified trimester
- O29.9Unspecified complication of anesthesia during pregnancy
- O29.90Unspecified complication of anesthesia during pregnancy, unspecified trimester
- O29.91Unspecified complication of anesthesia during pregnancy, first trimester
- O29.92Unspecified complication of anesthesia during pregnancy, second trimester
- O29.93Unspecified complication of anesthesia during pregnancy, third trimester
O29 MS-DRGs
As the principal diagnosis, all 56 billable codes under O29 group to MS-DRG 817, 818, 819, 831, 832, or 833 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 817 Other Antepartum Diagnoses with O.R. Procedures with MCC
- DRG 818 Other Antepartum Diagnoses with O.R. Procedures with CC
- DRG 819 Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
- DRG 831 Other Antepartum Diagnoses without O.R. Procedures with MCC
- DRG 832 Other Antepartum Diagnoses without O.R. Procedures with CC
- DRG 833 Other Antepartum Diagnoses without O.R. Procedures without CC/MCC
Other codes that refer to O29
Notes on these codes point to O29.
- J12 Excludes2: aspiration pneumonia due to anesthesia during pregnancy (O29)
- J18 Excludes2: aspiration pneumonia due to anesthesia during pregnancy (O29)
- J95.4 Excludes1: aspiration pneumonitis due to anesthesia complicating pregnancy (O29)
- T41 Excludes1: complications of anesthesia during pregnancy (O29.-)
- T88 Excludes2: complications of anesthesia in pregnancy (O29.-)
- T88.2 Excludes1: pregnancy (O29.-)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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.
Read more about anesthesia on MedlinePlusHealth Problems in Pregnancy
A health problem in pregnancy is any disease or condition that could affect your health or the health of your fetus. Some health problems may make it more likely that you will have a high-risk pregnancy. A high-risk pregnancy is one in which you, your fetus, or both are at higher risk for health problems than in a typical pregnancy.
Read more about health problems in pregnancy on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.