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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  • Z98.870—

    Personal history of in utero procedure during pregnancy

  • Z98.871—

    Personal history of in utero procedure while a fetus

  • Z98.890—

    Other specified postprocedural states

  • Z98.891—

    History of uterine scar from previous surgery

  • Z99.0—

    Dependence on aspirator

  • Z99.11—

    Dependence on respirator [ventilator] status

  • Z99.12—

    Encounter for respirator [ventilator] dependence during power failure

  • Z99.2—

    Dependence on renal dialysis

  • Z99.3—

    Dependence on wheelchair

  • Z99.81—

    Dependence on supplemental oxygen

  • Z99.89—

    Dependence on other enabling machines and devices

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