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    v1.0.28
    OpenPayerBilling CodesOther maternal disorders predominantly related to pregnancyICD-10-CM o29-complications-of-anesthesia
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    ICD-10-CM Code For Complications Of Anesthesia During Pregnancy: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O29 includes anesthesia-related complications that occur during pregnancy, such as adverse effects of anesthetic agents, events during regional or general anesthesia, and other perioperative complications impacting the pregnant patient and fetus. These ICD-10-CM diagnosis codes are used to document clinical scenarios including intraoperative complications, adverse drug reactions to anesthetics, and anesthesia-related respiratory or cardiovascular events that affect maternal and fetal status. Accurate coding within the ICD-10-CM O29 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM O29: Complications Of Anesthesia During Pregnancy Overview

    This group represents anesthesia-related complications that occur during pregnancy, affecting maternal and fetal safety. It targets perioperative and obstetric anesthesia events that can complicate pregnancy management and delivery. Accurate coding matters for proper clinical documentation and supports appropriate reimbursement for services related to anesthesia complications.

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    When to Use

    Use codes from this group when anesthesia administration during pregnancy results in adverse effects, intraoperative complications, or other anesthesia-related events that impact care. These codes apply when documenting anesthesia-related conditions that require treatment, monitoring, or influence obstetric management.

    ICD-10-CM Codes

    56 rows

    ICD-10-CM 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

    Showing 1–20 of 56

    DRG Codes

    6 rows

    DRG CodeDescription
    817Other Antepartum Diagnoses with O.R. Procedures with MCC
    818Other Antepartum Diagnoses with O.R. Procedures with CC
    819Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
    831Other Antepartum Diagnoses without O.R. Procedures with MCC
    832Other Antepartum Diagnoses without O.R. Procedures with CC
    833Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

    Typical Clinical Scenarios

    • A pregnant woman in active labor receives regional anesthesia for labor analgesia and develops sudden high neuraxial block with respiratory compromise and hypotension shortly after epidural top-up; she is brought to the obstetric OR for urgent airway management and hemodynamic support. A diagnosis from this group is assigned because the anesthesia caused an acute complication during pregnancy requiring immediate intervention. Typical codes: O29.3X1, O29.3X2
    • A pregnant patient scheduled for elective cesarean delivery has documented previous adverse reaction to general anesthetic agents manifesting as prolonged postoperative nausea, vomiting and airway sensitivity; anesthesiology documents the complication of anesthesia related to pregnancy care and plans alternative technique and monitoring. A code from this group is assigned to capture the maternal complication related to anesthesia during the prenatal/peripartum period. Typical codes: O29.111, O29.119
    • A woman in immediate postoperative recovery after cesarean section develops wound infection and delayed emergence attributed to residual effects of administered anesthetic and required extended monitoring and additional maternal care on the postpartum unit. A diagnosis from this group is used as a comorbid complication related to the anesthesia exposure during the pregnancy-related procedure. Typical codes: O29.8X1, O29.8X9

    Related Codes

    O20-HEMORRHAGE-IN-EARLY-PREGNANCY

    ICD-10-CM Code For Hemorrhage In Early Pregnancy: Group Overview

    O21-EXCESSIVE-VOMITING-IN-PREGNANCY

    ICD-10-CM Code For Excessive Vomiting In Pregnancy: Group Overview

    O22-VENOUS-COMPLICATIONS-AND-HEMORRHOIDS

    ICD-10-CM Code For Venous Complications And Hemorrhoids In Pregnancy: Group Overview

    O23-INFECTIONS-OF-GENITOURINARY-TRACT

    ICD-10-CM Code For Infections Of Genitourinary Tract In Pregnancy: Group Overview

    O24-DIABETES-MELLITUS-IN-PREGNANCY

    ICD-10-CM Code For Diabetes Mellitus In Pregnancy, Childbirth, And The Puerperium: Group Overview

    O25-MALNUTRITION-IN-PREGNANCY

    ICD-10-CM Code For Malnutrition In Pregnancy Childbirth And The Puerperium: Group Overview

    O26-MATERNAL-CARE-OTHER-CONDITIONS

    ICD-10-CM Code For Maternal Care For Other Conditions Predominantly Related To Pregnancy: Group Overview

    O28-ABNORMAL-ANTENATAL-SCREENING-FINDINGS

    ICD-10-CM Code For Abnormal Findings On Antenatal Screening Of Mother: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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