Code
Hierarchy
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Z00-Z99 Factors influencing health status and contact with health services (Z00-Z99)
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Z00-Z13 Persons encountering health services for examinations (Z00-Z13)
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Z04 Encounter for examination and observation for other reasons
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Z04.1 Encounter for examination and observation following transport accident
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Z04.2 Encounter for examination and observation following work accident
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Z04.3 Encounter for examination and observation following other accident
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Z04.4 Encounter for examination and observation following alleged rape
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Z04.6 Encounter for general psychiatric examination, requested by authority
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Z04.7 Encounter for examination and observation following alleged physical abuse
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Z04.8 Encounter for examination and observation for other specified reasons
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Z04.9 Encounter for examination and observation for unspecified reason
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Notes
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Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
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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:
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(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.
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(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.
Inclusion Terms
Z04.9
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Encounter for observation NOS
Includes
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encounter for examination for medicolegal reasons
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This category is to be used when a person without a diagnosis is suspected of having an abnormal condition, without signs or symptoms, which requires study, but after examination and observation, is ruled-out. This category is also for use for administrative and legal observation status.