2025 ICD-10-CM Diagnosis Code C80.0

Disseminated malignant neoplasm, unspecified

  • C80.0 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2025 edition of ICD-10-CM C80.0 became effective on October 1, 2024.
  • This is the American ICD-10-CM version of C80.0 – other international versions of ICD-10 C80.0 may differ.

Applicable To

  • Carcinomatosis NOS
  • Generalized cancer, unspecified site (primary) (secondary)
  • Generalized malignancy, unspecified site (primary) (secondary)

The following code(s) above C80.0 contain annotation back-references

 that may be applicable to C80.0:

  • C00-D49  Neoplasms
  • C80  Malignant neoplasm without specification of site

Approximate Synonyms

  • Adenocarcinoma carcinomatosis
  • Cancer of the ovary, disseminated
  • Cancer of the vulva, disseminated
  • Cancer of vulva, disseminated
  • Cancer, carcinomatosis
  • Cancer, carcinomatosis squamous cell
  • Cancer, carcinomatosis, adenocarcinoma
  • Cancer, carcinomatosis, small cell
  • Cancer, carcinomatosis, undifferentiated lg cell
  • Cancer, disseminated
  • Carcinomatosis
  • Carcinomatosis melanoma
  • Melanoma, carcinomatosis
  • Ovarian cancer, disseminated
  • Small cell carcinoma carcinomatosis
  • Squamous cell carcinomatosis
  • Undifferentiated large cell carcinomatosis
  • Widespread metastatic malignant neoplastic disease

Clinical Information

  • A condition in which cancer is spread widely throughout the body, or, in some cases, to a relatively large region of the body.
  • Carcinoma that has spread diffusely to an anatomic site or throughout the body.

ICD-10-CM C80.0 is grouped within Diagnostic Related Group(s) (MS-DRG v42.0):

  • 826 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with mcc
  • 827 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures with cc
  • 828 Myeloproliferative disorders or poorly differentiated neoplasms with major o.r. Procedures without cc/mcc
  • 829 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures with cc/mcc
  • 830 Myeloproliferative disorders or poorly differentiated neoplasms with other procedures without cc/mcc
  • 843 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with mcc
  • 844 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses with cc
  • 845 Other myeloproliferative disorders or poorly differentiated neoplastic diagnoses without cc/mcc

Convert C80.0 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change
  • 2025 (effective 10/1/2024): No change

Code annotations containing back-references to C80.0:

Diagnosis Index entries containing back-references to C80.0:

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