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    OpenPayerBilling CodesMalignant neoplasms of female genital organsICD-10-CM c58-malignant-neoplasm-of-placenta
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    ICD-10-CM Code For Malignant Neoplasm Of Placenta: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group C58 includes malignant neoplasms of the placenta, such as gestational trophoblastic tumors arising in placental tissue and related cancers. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving malignant placental tumors, capturing disease extent, metastatic involvement, and complications related to the neoplasm. Accurate coding within the ICD-10-CM C58 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM C58: Malignant Neoplasm Of Placenta Overview

    This code group represents malignant tumors arising from placental tissue, including choriocarcinoma and related gestational trophoblastic neoplasms affecting the placenta. These conditions target the reproductive system with potential for local invasion and distant metastasis. Accurate coding is important for clinical documentation and can affect reimbursement and cancer registry reporting.

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    When to Use

    Use a code from this group when a malignant placental neoplasm has been diagnosed by clinical, histopathologic, or imaging findings. Codes in this group are applied to encounters documenting the presence, treatment, or follow-up of placental malignancy.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    C58Malignant neoplasm of placenta

    DRG Codes

    9 rows

    DRG CodeDescription
    736Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with MCC
    737Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy with CC
    738Uterine and Adnexa Procedures for Ovarian or Adnexal Malignancy without CC/MCC
    739Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy with MCC
    740Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy with CC
    741Uterine and Adnexa Procedures for Non-Ovarian and Non-Adnexal Malignancy without CC/MCC
    754Malignancy, Female Reproductive System with MCC
    755Malignancy, Female Reproductive System with CC
    756Malignancy, Female Reproductive System without CC/MCC

    Typical Clinical Scenarios

    • A pregnant patient in the second or third trimester presents with abnormal uterine bleeding and persistent pelvic pain; ultrasound and subsequent histopathology of expelled tissue confirm an invasive malignant trophoblastic tumor originating in the placenta. The patient is admitted for staging and initiation of oncologic management due to malignant placental tissue causing systemic symptoms, and the diagnosis is assigned based on pathology confirming malignancy of placental origin. Typical codes: C58
    • A postpartum patient develops persistent vaginal bleeding and an elevated beta-hCG level several weeks after delivery, and dilation and curettage with pathology demonstrates malignant neoplasm arising from placental tissue, prompting oncology referral for further treatment. The diagnosis is recorded because the malignant process is localized to placental tissue identified after delivery. Typical codes: C58
    • A patient presents emergently with heavy vaginal hemorrhage and hemodynamic instability following a recent molar pregnancy; surgical specimen pathology reveals a malignant placental neoplasm with metastatic concern, and the diagnosis is assigned to document the malignant placental origin complicating the recent pregnancy event. Typical codes: C58

    Related Codes

    C51-MALIGNANT-NEOPLASM-OF-VULVA

    ICD-10-CM Code For Malignant Neoplasm Of Vulva: Group Overview

    C52-MALIGNANT-NEOPLASM-OF-VAGINA

    ICD-10-CM Code For Malignant Neoplasm Of Vagina: Group Overview

    C53-MALIGNANT-NEOPLASM-OF-CERVIX-UTERI

    ICD-10-CM Code For Malignant Neoplasm Of Cervix Uteri: Group Overview

    C54-MALIGNANT-NEOPLASM-OF-CORPUS-UTERI

    ICD-10-CM Code For Malignant Neoplasm Of Corpus Uteri: Group Overview

    C55-MALIGNANT-NEOPLASM-OF-UTERUS

    ICD-10-CM Code For Malignant Neoplasm Of Uterus Part Unspecified: Group Overview

    C56-MALIGNANT-NEOPLASM-OF-OVARY

    ICD-10-CM Code For Malignant Neoplasm Of Ovary: Group Overview

    C57-MALIGNANT-NEOPLASM-OTHER-FEMALE-GENITAL-ORGANS

    ICD-10-CM Code For Malignant Neoplasm Of Other And Unspecified Female Genital Organs: 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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