All ICD10 Codes
Chapter 21

Z00–Z99: Factors Influencing Health Status and Contact with Health Services

Factors Influencing Health Status and Contact with Health Services diagnostic classification updated for 2026.

All CodesBillable Only
Internal Codes
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  • Z01.83—

    Encounter for blood typing

  • Z01.84—

    Encounter for antibody response examination

  • Z01.89—

    Encounter for other specified special examinations

  • Z02—

    Encounter for administrative examination

  • Z02.0—

    Encounter for examination for admission to educational institution

  • Z02.1—

    Encounter for pre-employment examination

  • Z02.2—

    Encounter for examination for admission to residential institution

  • Z02.3—

    Encounter for examination for recruitment to armed forces

  • Z02.4—

    Encounter for examination for driving license

  • Z02.5—

    Encounter for examination for participation in sport

  • Z02.6—

    Encounter for examination for insurance purposes

  • Z02.7—

    Encounter for issue of medical certificate

  • Z02.71—

    Encounter for disability determination

  • Z02.79—

    Encounter for issue of other medical certificate

  • Z02.8—

    Encounter for other administrative examinations

  • Z02.81—

    Encounter for paternity testing

  • Z02.82—

    Encounter for adoption services

  • Z02.83—

    Encounter for blood-alcohol and blood-drug test

  • Z02.84—

    Encounter for child welfare exam

  • Z02.89—

    Encounter for other administrative examinations

  • Z02.9—

    Encounter for administrative examinations, unspecified

  • Z03—

    Encounter for medical observation for suspected diseases and conditions ruled out

  • Z03.6—

    Encounter for observation for suspected toxic effect from ingested substance ruled out

  • Z03.7—

    Encounter for suspected maternal and fetal conditions ruled out

  • Z03.71—

    Encounter for suspected problem with amniotic cavity and membrane ruled out

  • Z03.72—

    Encounter for suspected placental problem ruled out

  • Z03.73—

    Encounter for suspected fetal anomaly ruled out

  • Z03.74—

    Encounter for suspected problem with fetal growth ruled out

  • Z03.75—

    Encounter for suspected cervical shortening ruled out

  • Z03.79—

    Encounter for other suspected maternal and fetal conditions ruled out

  • Z03.8—

    Encounter for observation for other suspected diseases and conditions ruled out

  • Z03.81—

    Encounter for observation for suspected exposure to biological agents ruled out

  • Z03.810—

    Encounter for observation for suspected exposure to anthrax ruled out

  • Z03.818—

    Encounter for observation for suspected exposure to other biological agents ruled out

  • Z03.82—

    Encounter for observation for suspected foreign body ruled out

  • Z03.821—

    Encounter for observation for suspected ingested foreign body ruled out

  • Z03.822—

    Encounter for observation for suspected aspirated (inhaled) foreign body ruled out

  • Z03.823—

    Encounter for observation for suspected inserted (injected) foreign body ruled out

  • Z03.83—

    Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

  • Z03.89—

    Encounter for observation for other suspected diseases and conditions ruled out

  • Z04—

    Encounter for examination and observation for other reasons

  • Z04.1—

    Encounter for examination and observation following transport accident

  • Z04.2—

    Encounter for examination and observation following work accident

  • Z04.3—

    Encounter for examination and observation following other accident

  • Z04.4—

    Encounter for examination and observation following alleged rape

  • Z04.41—

    Encounter for examination and observation following alleged adult rape

  • Z04.42—

    Encounter for examination and observation following alleged child rape

  • Z04.6—

    Encounter for general psychiatric examination, requested by authority

  • Z04.7—

    Encounter for examination and observation following alleged physical abuse

  • Z04.71—

    Encounter for examination and observation following alleged adult physical abuse

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