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    v1.0.28
    OpenPayerBilling CodesOther obstetric conditions, not elsewhere classifiedICD-10-CM o9a-maternal-malignancy-traumatic-injury-abuse
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    ICD-10-CM Code For Maternal Malignant Neoplasms Traumatic Injuries And Abuse Classifiable Elsewhere But Complicating Pregnancy Childbirth And The Puerperium: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group O9A includes maternal malignant neoplasms, traumatic injuries, and abuse that are classifiable to other chapters but that complicate pregnancy, childbirth, and the puerperium. These ICD-10-CM diagnosis codes are used to document complications of pregnancy arising from cancers, external injuries, or abuse, capturing the interaction between the obstetric state and the comorbid condition. Accurate coding within the ICD-10-CM O9A group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM O9A: Maternal Malignant Neoplasms, Traumatic Injuries And Abuse Classifiable Elsewhere But Complicating Pregnancy, Childbirth And The Puerperium Overview

    This code group captures maternal conditions—malignant neoplasms, traumatic injuries, and forms of abuse—that are classifiable to other chapters but which complicate pregnancy, childbirth, or the puerperium. The diagnoses target oncologic conditions, external injuries, and instances of abuse affecting the pregnant or postpartum patient. Accurate coding is important to reflect clinical complexity and to support appropriate claim adjudication and reimbursement.

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    When to Use

    Use a code from this group when a pregnant or postpartum patient has a malignant neoplasm, traumatic injury, or documented abuse that affects the course of pregnancy, delivery, or recovery. Assign the appropriate O9A code in addition to the code for the primary condition to convey that the nonobstetric condition complicates the obstetric encounter.

    ICD-10-CM Codes

    30 rows

    ICD-10-CM CodeDescription
    O9A.111Malignant neoplasm complicating pregnancy, first trimester
    O9A.112Malignant neoplasm complicating pregnancy, second trimester
    O9A.113Malignant neoplasm complicating pregnancy, third trimester
    O9A.119Malignant neoplasm complicating pregnancy, unspecified trimester
    O9A.12Malignant neoplasm complicating childbirth
    O9A.13Malignant neoplasm complicating the puerperium
    O9A.211Injury, poisoning and certain other consequences of external causes complicating pregnancy, first trimester
    O9A.212Injury, poisoning and certain other consequences of external causes complicating pregnancy, second trimester
    O9A.213Injury, poisoning and certain other consequences of external causes complicating pregnancy, third trimester
    O9A.219Injury, poisoning and certain other consequences of external causes complicating pregnancy, unspecified trimester
    O9A.22Injury, poisoning and certain other consequences of external causes complicating childbirth
    O9A.23Injury, poisoning and certain other consequences of external causes complicating the puerperium
    O9A.311Physical abuse complicating pregnancy, first trimester
    O9A.312Physical abuse complicating pregnancy, second trimester
    O9A.313Physical abuse complicating pregnancy, third trimester
    O9A.319Physical abuse complicating pregnancy, unspecified trimester
    O9A.32Physical abuse complicating childbirth
    O9A.33Physical abuse complicating the puerperium
    O9A.411Sexual abuse complicating pregnancy, first trimester
    O9A.412Sexual abuse complicating pregnancy, second trimester

    Showing 1–20 of 30

    DRG Codes

    9 rows

    DRG CodeDescription
    769Postpartum and Post Abortion Diagnoses with O.R. Procedures
    776Postpartum and Post Abortion Diagnoses without O.R. Procedures
    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
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    Typical Clinical Scenarios

    • A pregnant woman in her first trimester presents to the emergency department after a motor vehicle collision with pelvic and lower abdominal trauma. She has acute abdominal pain and vaginal bleeding; evaluation focuses on maternal stabilization and assessment for placental or fetal injury. A code from this group is assigned to indicate a traumatic injury complicating pregnancy when the injury is classifiable elsewhere but affects the pregnancy. Typical codes: O9A.111, O9A.112
    • A woman in her third trimester with a known history of metastatic breast cancer is admitted for progressive dyspnea and anemia requiring transfusion and coordination of obstetric and oncology care. The malignant neoplasm is a chronic comorbid condition that complicates the pregnancy and impacts management decisions; a code from this group documents the cancer complicating pregnancy. Typical codes: O9A.311, O9A.312, O9A.313
    • A pregnant patient reports intimate partner physical abuse with recent contusions and head injury; she presents to prenatal clinic for evaluation and safety planning and is found to have new trauma to the abdomen raising concern for fetal exposure. Because the injuries are external trauma or abuse that complicate the pregnancy and are classified elsewhere, an appropriate code from this group is used to capture the abuse/trauma complicating the pregnancy. Typical codes: O9A.211, O9A.212

    Related Codes

    O94-SEQUELAE-OF-OBSTETRIC-COMPLICATIONS

    ICD-10-CM Code For Sequelae Of Complication Of Pregnancy Childbirth And The Puerperium: Group Overview

    O98-MATERNAL-INFECTIOUS-CONDITIONS

    ICD-10-CM Code For Maternal Infectious And Parasitic Diseases Classifiable Elsewhere But Complicating Pregnancy: Group Overview

    O99-OTHER-MATERNAL-DISEASES

    ICD-10-CM Code For Other Maternal Diseases Classifiable Elsewhere But Complicating Pregnancy Childbirth And The Puerperium: 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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