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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  • Z48.2—

    Encounter for aftercare following organ transplant

  • Z48.21—

    Encounter for aftercare following heart transplant

  • Z48.22—

    Encounter for aftercare following kidney transplant

  • Z48.23—

    Encounter for aftercare following liver transplant

  • Z48.24—

    Encounter for aftercare following lung transplant

  • Z48.28—

    Encounter for aftercare following multiple organ transplant

  • Z48.280—

    Encounter for aftercare following heart-lung transplant

  • Z48.288—

    Encounter for aftercare following multiple organ transplant

  • Z48.29—

    Encounter for aftercare following other organ transplant

  • Z48.290—

    Encounter for aftercare following bone marrow transplant

  • Z48.298—

    Encounter for aftercare following other organ transplant

  • Z48.3—

    Aftercare following surgery for neoplasm

  • Z48.8—

    Encounter for other specified postprocedural aftercare

  • Z48.81—

    Encounter for surgical aftercare following surgery on specified body systems

  • Z48.810—

    Encounter for surgical aftercare following surgery on the sense organs

  • Z48.811—

    Encounter for surgical aftercare following surgery on the nervous system

  • Z48.812—

    Encounter for surgical aftercare following surgery on the circulatory system

  • Z48.813—

    Encounter for surgical aftercare following surgery on the respiratory system

  • Z48.814—

    Encounter for surgical aftercare following surgery on the teeth or oral cavity

  • Z48.815—

    Encounter for surgical aftercare following surgery on the digestive system

  • Z48.816—

    Encounter for surgical aftercare following surgery on the genitourinary system

  • Z48.817—

    Encounter for surgical aftercare following surgery on the skin and subcutaneous tissue

  • Z48.89—

    Encounter for other specified surgical aftercare

  • Z49—

    Encounter for care involving renal dialysis

  • Z49.0—

    Preparatory care for renal dialysis

  • Z49.01—

    Encounter for fitting and adjustment of extracorporeal dialysis catheter

  • Z49.02—

    Encounter for fitting and adjustment of peritoneal dialysis catheter

  • Z49.3—

    Encounter for adequacy testing for dialysis

  • Z49.31—

    Encounter for adequacy testing for hemodialysis

  • Z49.32—

    Encounter for adequacy testing for peritoneal dialysis

  • Z51—

    Encounter for other aftercare and medical care

  • Z51.0—

    Encounter for antineoplastic radiation therapy

  • Z51.1—

    Encounter for antineoplastic chemotherapy and immunotherapy

  • Z51.11—

    Encounter for antineoplastic chemotherapy

  • Z51.12—

    Encounter for antineoplastic immunotherapy

  • Z51.5—

    Encounter for palliative care

  • Z51.6—

    Encounter for desensitization to allergens

  • Z51.8—

    Encounter for other specified aftercare

  • Z51.81—

    Encounter for therapeutic drug level monitoring

  • Z51.89—

    Encounter for other specified aftercare

  • Z51.A—

    Encounter for sepsis aftercare

  • Z52—

    Donors of organs and tissues

  • Z52.0—

    Blood donor

  • Z52.00—

    Unspecified blood donor

  • Z52.000—

    Unspecified donor, whole blood

  • Z52.001—

    Unspecified donor, stem cells

  • Z52.008—

    Unspecified donor, other blood

  • Z52.01—

    Autologous blood donor

  • Z52.010—

    Autologous donor, whole blood

  • Z52.011—

    Autologous donor, stem cells

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