Chapter 21
Factors influencing health status and contact with health services
Z00–Z99
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FY 2027 effective October 1, 2026 · 90 categories in this chapter
Blocks in This Chapter
ICD-10-CM groups this chapter's categories into 15 blocks of three-character categories.
- Z00 –Z13 Persons encountering health services for examinations
- Z14 –Z15 Genetic carrier and genetic susceptibility to disease
- Z16 Resistance to antimicrobial drugs
- Z17 Estrogen, and other hormones and factors receptor status
- Z18 Retained foreign body fragments
- Z19 Hormone sensitivity malignancy status
- Z20 –Z29 Persons with potential health hazards related to communicable diseases
- Z30 –Z39 Persons encountering health services in circumstances related to reproduction
- Z40 –Z53 Encounters for other specific health care
- Z55 –Z65 Persons with potential health hazards related to socioeconomic and psychosocial circumstances
- Z66 Do not resuscitate status
- Z67 Blood type
- Z68 Body mass index [BMI]
- Z69 –Z76 Persons encountering health services in other circumstances
- Z77 –Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Categories
Persons encountering health services for examinations (Z00-Z13)
- Z00 Encounter for general examination without complaint, suspected or reported diagnosis Has subcategories
- Z01 Encounter for other special examination without complaint, suspected or reported diagnosis Has subcategories
- Z02 Encounter for administrative examination Has subcategories
- Z03 Encounter for medical observation for suspected diseases and conditions ruled out Has subcategories
- Z04 Encounter for examination and observation for other reasons Has subcategories
- Z05 Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out Has subcategories
- Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm
- Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
- Z11 Encounter for screening for infectious and parasitic diseases Has subcategories
- Z12 Encounter for screening for malignant neoplasms Has subcategories
- Z13 Encounter for screening for other diseases and disorders Has subcategories
Genetic carrier and genetic susceptibility to disease (Z14-Z15)
Resistance to antimicrobial drugs (Z16)
Estrogen, and other hormones and factors receptor status (Z17)
Retained foreign body fragments (Z18)
Hormone sensitivity malignancy status (Z19)
Persons with potential health hazards related to communicable diseases (Z20-Z29)
- Z20 Contact with and (suspected) exposure to communicable diseases Has subcategories
- Z21 Asymptomatic human immunodeficiency virus [HIV] infection status
- Z22 Carrier of infectious disease Has subcategories
- Z23 Encounter for immunization
- Z28 Immunization not carried out and underimmunization status Has subcategories
- Z29 Encounter for other prophylactic measures Has subcategories
Persons encountering health services in circumstances related to reproduction (Z30-Z39)
- Z30 Encounter for contraceptive management Has subcategories
- Z31 Encounter for procreative management Has subcategories
- Z32 Encounter for pregnancy test and childbirth and childcare instruction Has subcategories
- Z33 Pregnant state Has subcategories
- Z34 Encounter for supervision of normal pregnancy Has subcategories
- Z36 Encounter for antenatal screening of mother Has subcategories
- Z3A Weeks of gestation Has subcategories
- Z37 Outcome of delivery Has subcategories
- Z38 Liveborn infants according to place of birth and type of delivery Has subcategories
- Z39 Encounter for maternal postpartum care and examination Has subcategories
Encounters for other specific health care (Z40-Z53)
- Z40 Encounter for prophylactic surgery Has subcategories
- Z41 Encounter for procedures for purposes other than remedying health state Has subcategories
- Z42 Encounter for plastic and reconstructive surgery following medical procedure or healed injury Has subcategories
- Z43 Encounter for attention to artificial openings Has subcategories
- Z44 Encounter for fitting and adjustment of external prosthetic device Has subcategories
- Z45 Encounter for adjustment and management of implanted device Has subcategories
- Z46 Encounter for fitting and adjustment of other devices Has subcategories
- Z47 Orthopedic aftercare Has subcategories
- Z48 Encounter for other postprocedural aftercare Has subcategories
- Z49 Encounter for care involving renal dialysis Has subcategories
- Z51 Encounter for other aftercare and medical care Has subcategories
- Z52 Donors of organs and tissues Has subcategories
- Z53 Persons encountering health services for specific procedures and treatment, not carried out Has subcategories
Persons with potential health hazards related to socioeconomic and psychosocial circumstances (Z55-Z65)
- Z55 Problems related to education and literacy Has subcategories
- Z56 Problems related to employment and unemployment Has subcategories
- Z57 Occupational exposure to risk factors Has subcategories
- Z58 Problems related to physical environment Has subcategories
- Z59 Problems related to housing and economic circumstances Has subcategories
- Z60 Problems related to social environment Has subcategories
- Z62 Problems related to upbringing Has subcategories
- Z63 Other problems related to primary support group, including family circumstances Has subcategories
- Z64 Problems related to certain psychosocial circumstances Has subcategories
- Z65 Problems related to other psychosocial circumstances Has subcategories
Do not resuscitate status (Z66)
Blood type (Z67)
Body mass index [BMI] (Z68)
Persons encountering health services in other circumstances (Z69-Z76)
- Z69 Encounter for mental health services for victim and perpetrator of abuse Has subcategories
- Z70 Counseling related to sexual attitude, behavior and orientation Has subcategories
- Z71 Persons encountering health services for other counseling and medical advice, not elsewhere classified Has subcategories
- Z72 Problems related to lifestyle Has subcategories
- Z73 Problems related to life management difficulty Has subcategories
- Z74 Problems related to care provider dependency Has subcategories
- Z75 Problems related to medical facilities and other health care Has subcategories
- Z76 Persons encountering health services in other circumstances Has subcategories
Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
- Z77 Other contact with and (suspected) exposures hazardous to health Has subcategories
- Z78 Other specified health status Has subcategories
- Z79 Long term (current) drug therapy Has subcategories
- Z80 Family history of primary malignant neoplasm Has subcategories
- Z81 Family history of mental and behavioral disorders Has subcategories
- Z82 Family history of certain disabilities and chronic diseases (leading to disablement) Has subcategories
- Z83 Family history of other specific disorders Has subcategories
- Z84 Family history of other conditions Has subcategories
- Z85 Personal history of malignant neoplasm Has subcategories
- Z86 Personal history of certain other diseases Has subcategories
- Z87 Personal history of other diseases and conditions Has subcategories
- Z88 Allergy status to drugs, medicaments and biological substances Has subcategories
- Z89 Acquired absence of limb Has subcategories
- Z90 Acquired absence of organs, not elsewhere classified Has subcategories
- Z91 Personal risk factors, not elsewhere classified Has subcategories
- Z92 Personal history of medical treatment Has subcategories
- Z93 Artificial opening status Has subcategories
- Z94 Transplanted organ and tissue status Has subcategories
- Z95 Presence of cardiac and vascular implants and grafts Has subcategories
- Z96 Presence of other functional implants Has subcategories
- Z97 Presence of other devices Has subcategories
- Z98 Other postprocedural states Has subcategories
- Z99 Dependence on enabling machines and devices, not elsewhere classified Has subcategories