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ICD-10-CM category O29: Complications of anesthesia during pregnancy

Category O29 is a heading in chapter 15 (Pregnancy, childbirth and the puerperium (O00-O9A)), section Other maternal disorders predominantly related to pregnancy (O20-O29). It is not billable; report one of the 56 complete codes below.

Notes that apply to every O29 code

Includes
  • maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy
Excludes2 (not part of this condition, may be coded together)
  • 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

Billable codes in O29

Billable FY2027 ICD-10-CM codes in category O29
CodeDescription
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
O29.021Pressure 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
O29.091Other 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
O29.111Cardiac 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
O29.121Cardiac 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
O29.191Other 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
O29.211Cerebral 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
O29.291Other 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
O29.3X1Toxic 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
O29.40Spinal 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
O29.5X1Other 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
O29.60Failed 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
O29.8X1Other 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
O29.90Unspecified 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

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.

Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.