Z71.85 Encounter for immunization safety counseling

The ICD-10-CM code for Encounter for immunization safety counseling is Z71.85 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

21: Factors influencing health status and contact with health services (Z00-Z99)

Section

Z69-Z76: Persons encountering health services in other circumstances (Z69-Z76)

Category Z71

23 codes (19 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z71.85:

• Counseling (for) › immunization safety
• Counseling (for) › vaccine product safety

Inclusion Terms

• Encounter for vaccine product safety counseling

U.S. Hospital Utilization

• An estimated 11,430 U.S. inpatient stays in 2023 included Z71.85 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Z71.85 immunization safety counseling—use/when not to use

Code Z71.85, Encounter for immunization safety counseling, is to be used for counseling of the patient or caregiver regarding the safety of a vaccine. This code should not be used for the provision of general information regarding risks and potential side effects during routine encounters for the administration of vaccines.

Used with any code in range A00.0-T88.9, Z00-Z99

1) Used with any code in the range of A00.0-T88.9, Z00-Z99 An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. Though they are most applicable to injuries, they are also valid for use with such things as infections or diseases due to an external source, and other health conditions, such as a heart attack that occurs during strenuous physical activity.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)