Guidelines › Disseminated and unspecified malignant neoplasm
Disseminated and unspecified malignant neoplasm
Official text from the FY2027 ICD-10-CM Official Guidelines for Coding and Reporting. The wording is quoted exactly.
Guidelines I.C.2.j; I.C.2.k
“Code C80.0, Disseminated malignant neoplasm, unspecified, is for use only in those cases where the patient has advanced metastatic disease and no known primary or secondary sites are specified. It should not be used in place of assigning codes for the primary site and all known secondary sites.”
“This code should only be used when no determination can be made as to the primary site of a malignancy. This code should rarely be used in the inpatient setting.”
Where this applies
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