Circular 06/2026
Chapter XXI — Factors influencing health status and contact with health services
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Z00-Z13 — Persons encountering health services for examination and investigation
Z00General examination and investigation of persons without complaint and reported diagnosisZ01Other special examinations and investigations of persons without complaint or reported diagnosisZ02Examination and encounter for administrative purposesZ03Medical observation and evaluation for suspected diseases and conditions, ruled outZ04Examination and observation for other reasonsZ08Follow-up examination after treatment for malignant neoplasmsZ09Follow-up examination after treatment for conditions other than malignant neoplasmsZ10Routine general health check-up of defined subpopulationZ11Special screening examination for infectious and parasitic diseasesZ12Special screening examination for neoplasmsZ13Special screening examination for other diseases and disorders
Z20-Z29 — Persons with potential health hazards related to communicable diseases
Z20Contact with and exposure to communicable diseasesZ21Asymptomatic human immunodeficiency virus [HIV] infection statusZ22Carrier of infectious diseaseZ23Need for immunization against single bacterial diseasesZ24Need for immunization against certain single viral diseasesZ25Need for immunization against other single viral diseasesZ26Need for immunization against other single infectious diseasesZ27Need for immunization against combinations of infectious diseasesZ28Immunization not carried outZ29Need for other prophylactic measures
Z30-Z39 — Persons encountering health services in circumstances related to reproduction
Z30Contraceptive managementZ31Procreative managementZ32Pregnancy examination and testZ33Pregnant state, incidentalZ34Supervision of normal pregnancyZ35Supervision of high-risk pregnancyZ36Antenatal screeningZ37Outcome of deliveryZ38Liveborn infants according to place of birthZ39Postpartum care and examination
Z40-Z54 — Persons encountering health services for specific procedures and health care
Z40Prophylactic surgeryZ41Procedures for purposes other than remedying health stateZ42Follow-up care involving plastic surgeryZ43Attention to artificial openingsZ44Fitting and adjustment of external prosthetic deviceZ45Adjustment and management of implanted deviceZ46Fitting and adjustment of other devicesZ47Other orthopaedic follow-up careZ48Other surgical follow-up careZ49Care involving dialysisZ50Care involving use of rehabilitation proceduresZ51Other medical careZ52Donors of organs and tissuesZ53Persons encountering health services for specific procedures, not carried outZ54Convalescence
Z55-Z65 — Persons with potential health hazards related to socioeconomic and psychosocial circumstances
Z55Problems related to education and literacyZ56Problems related to employment and unemploymentZ57Occupational exposure to risk-factorsZ58Problems related to physical environmentZ59Problems related to housing and economic circumstancesZ60Problems related to social environmentZ61Problems related to negative life events in childhoodZ62Other problems related to upbringingZ63Other problems related to primary support group, including family circumstancesZ64Problems related to certain psychosocial circumstancesZ65Problems related to other psychosocial circumstances
Z70-Z76 — Persons encountering health services in other circumstances
Z70Counselling related to sexual attitude, behaviour and orientationZ71Persons encountering health services for other counselling and medical advice, not elsewhere classifiedZ72Problems related to lifestyleZ73Problems related to life-management difficultyZ74Problems related to care-provider dependencyZ75Problems related to medical facilities and other health careZ76Persons encountering health services in other circumstances
Z80-Z99 — Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Z80Family history of malignant neoplasmZ81Family history of mental and behavioural disordersZ82Family history of certain disabilities and chronic diseases leading to disablementZ83Family history of other specific disordersZ84Family history of other conditionsZ85Personal history of malignant neoplasmZ86Personal history of certain other diseasesZ87Personal history of other diseases and conditionsZ88Personal history of allergy to drugs, medicaments and biological substancesZ89Acquired absence of limbZ90Acquired absence of organs, not elsewhere classifiedZ91Personal history of risk-factors, not elsewhere classifiedZ92Personal history of medical treatmentZ93Artificial opening statusZ94Transplanted organ and tissue statusZ95Presence of cardiac and vascular implants and graftsZ96Presence of other functional implantsZ97Presence of other devicesZ98Other postsurgical statesZ99Dependence on enabling machines and devices, not elsewhere classified