Z51.12
✓ Billable
Encounter for antineoplastic immunotherapy
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z51.12
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Z51.12?
ICD-10-CM code Z51.12 represents Encounter for antineoplastic immunotherapy. It is a billable diagnosis code in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z51.12 billable?
Yes. Z51.12 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is Z51.12 in?
Z51.12 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z51 category
Z51
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Z51.0
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Z51.1
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Z51.5
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Z51.8
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Z51.11
Encounter for antineoplastic chemotherapy
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