Z51.1
Header — not billableEncounter for antineoplastic chemotherapy and immunotherapy
The ICD-10 code for encounter for antineoplastic chemotherapy and immunotherapy is Z51.1.
Z51.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
- encounter for chemotherapy and immunotherapy for nonneoplastic condition - code to condition
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z51.0Encounter for antineoplastic radiation therapy
- Z51.5Encounter for palliative care
- Z51.6Encounter for desensitization to allergens
- Z51.8Encounter for other specified aftercarenon-billable header
- Z51.AEncounter for sepsis aftercare
- Z51.1Encounter for antineoplastic chemotherapy and immunotherapynon-billable header