2017/18 ICD-10-CM Diagnosis Code Z23

Encounter for immunization

Note
  • procedure codes are required to identify the types of immunizations given
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, 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. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • any routine childhood examination
The following code(s) above Z23 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z23:
  • Z00-Z99
    2018 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    Note
    • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
    Factors influencing health status and contact with health services
Approximate Synonyms Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
ICD-10-CM Z23 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert Z23 to ICD-9-CM

Code History

Diagnosis Index entries containing back-references to Z23:

ICD-10-CM Codes Adjacent To Z23
Z22.321 Carrier or suspected carrier of Methicillin susceptible Staphylococcus aureus
Z22.322 Carrier or suspected carrier of Methicillin resistant Staphylococcus aureus
Z22.33 Carrier of bacterial disease due to streptococci
Z22.330 Carrier of Group B streptococcus
Z22.338 Carrier of other streptococcus
Z22.39 Carrier of other specified bacterial diseases
Z22.4 Carrier of infections with a predominantly sexual mode of transmission
Z22.6 Carrier of human T-lymphotropic virus type-1 [HTLV-1] infection
Z22.8 Carrier of other infectious diseases
Z22.9 Carrier of infectious disease, unspecified
Z23 Encounter for immunization
Z28 Immunization not carried out and underimmunization status
Z28.0 Immunization not carried out because of contraindication
Z28.01 Immunization not carried out because of acute illness of patient
Z28.02 Immunization not carried out because of chronic illness or condition of patient
Z28.03 Immunization not carried out because of immune compromised state of patient
Z28.04 Immunization not carried out because of patient allergy to vaccine or component
Z28.09 Immunization not carried out because of other contraindication
Z28.1 Immunization not carried out because of patient decision for reasons of belief or group pressure
Z28.2 Immunization not carried out because of patient decision for other and unspecified reason
Z28.20 Immunization not carried out because of patient decision for unspecified reason

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