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Factors influencing health status and contact with health services
NOTES:
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.
Chapter: 21: Factors influencing health status and contact with health services
Z00-Z13Persons encountering health services for examinations
NOTES:
 Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
EXCLUDES1:
 examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)
Persons encountering health services for examinations
Z14-Z15Genetic carrier and genetic susceptibility to disease
Z16Resistance to antimicrobial drugs
Z17Estrogen receptor status
Z18Retained foreign body fragments
Z19Hormone sensitivity malignancy status
Z20-Z29Persons with potential health hazards related to communicable diseases
Z30-Z39Persons encountering health services in circumstances related to reproduction
Z40-Z53Encounters for other specific health care
INCLUSION TERMS:
 Categories Z40-Z53 are intended for use to indicate a reason for care. They may be used for patients who have already been treated for a disease or injury, but who are receiving aftercare or prophylactic care, or care to consolidate the treatment, or to deal with a residual state
EXCLUDES2:
 follow-up examination for medical surveillance after treatment (Z08-Z09)
Encounters for other specific health care
Z55-Z65Persons with potential health hazards related to socioeconomic and psychosocial circumstances
Z66Do not resuscitate status
Z67Blood type
Z68Body mass index [BMI]
Z69-Z76Persons encountering health services in other circumstances
Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
ALSO CODE:
 any follow-up examination (Z08-Z09)
Persons with potential health hazards related to family and personal history and certain conditions influencing health status