Encounter for immunization (Z23)

• ICD-10 Index

  • Factors influencing health status and contact with health services (Z00–Z99)

    • Persons with potential health hazards related to communicable diseases (Z20-Z29)

      • Encounter for immunization (Z23)

        • Z23 - Encounter for immunization BILLABLE CODE

Instructional Notations

Code First Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

• any routine childhood examination

Code Also Code Also
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

• , if applicable, encounter for immunization safety counseling Z71.85

• procedure codes are required to identify the types of immunizations given