Patient admission/encounter solely for administration of chemotherapy, immunotherapy and radiation therapy
If a patient admission / encounter is solely for the administration of chemotherapy, immunotherapy or radiation therapy assign code V58.0, Encounter for radiation therapy, or V58.11, Encounter for antineoplastic chemotherapy, or V58.12, Encounter for antineoplastic immunotherapy as the first-listed or principal diagnosis. If a patient receives more than one of these therapies during the same admission more than one of these codes may be assigned, in any sequence.
The malignancy for which the therapy is being administered should be assigned as a secondary diagnosis.
Patient admitted for radiotherapy/chemotherapy and immunotherapy and develops complications
When a patient is admitted for the purpose of radiotherapy, immunotherapy or chemotherapy and develops complications such as uncontrolled nausea and vomiting or dehydration, the principal or first-listed diagnosis is V58.0, Encounter for radiotherapy, or V58.11, Encounter for antineoplastic chemotherapy, or V58.12, Encounter for antineoplastic immunotherapy followed by any codes for the complications.
ICD 10 codes:
Z51.0 Encounter for antineoplastic radiation therapy
Z51.11 Encounter for antineoplastic chemotherapy
Z51.12 Encounter for antineoplastic immunotherapy