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2. ICD-10 Codes
3. Chapter - Z00-Z99
4. Section - Z40-Z53
5. Category - Z51
6. Z51.1

Z51.1 - Encounter for antineoplastic chemotherapy and immunotherapy

• Applicable to Encounter for antineoplastic chemotherapy and immunotherapy
• The 2025 edition of ICD10-CM Z51.1 became effective on October 1, 2024.
• This is the American ICD10-CM version of Z51.1 - other international versions of ICD10 Z51.1 may differ.
• Z51.1 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• Z51.1 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.

Type 2 Excludes

• encounter for chemotherapy and immunotherapy for nonneoplastic condition - code to condition

The following codes above Z51.1 contain annotation back-references that may be applicable to Z51.1:

• Chapter: Z00-Z99 - Factors influencing health status and contact with health services
• Section: Z40-Z53 - Encounters for other specific health care
• Category: Z51 - Encounter for other aftercare and medical care

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.