Z ICD-10-CM Categories: Category Index
Browse 90 top-level ICD-10-CM categories beginning with Z, then follow their complete FY 2027 child-code hierarchies.
Complete category list
Categories beginning with Z
Open a category to continue through its complete hierarchy of more specific codes.
Z00Encounter for general examination without complaint, suspected or reported diagnosis
Z01Encounter for other special examination without complaint, suspected or reported diagnosis
Z02Encounter for administrative examination
Z03Encounter for medical observation for suspected diseases and conditions ruled out
Z04Encounter for examination and observation for other reasons
Z05Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
Z08Encounter for follow-up examination after completed treatment for malignant neoplasm
Z09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Z11Encounter for screening for infectious and parasitic diseases
Z12Encounter for screening for malignant neoplasms
Z13Encounter for screening for other diseases and disorders
Z14Genetic carrier
Z15Genetic susceptibility to disease
Z16Resistance to antimicrobial drugs
Z17Estrogen, and other hormones and factors receptor status
Z18Retained foreign body fragments
Z19Hormone sensitivity malignancy status
Z20Contact with and (suspected) exposure to communicable diseases
Z21Asymptomatic human immunodeficiency virus [HIV] infection status
Z22Carrier of infectious disease
Z23Encounter for immunization
Z28Immunization not carried out and underimmunization status
Z29Encounter for other prophylactic measures
Z30Encounter for contraceptive management
Z31Encounter for procreative management
Z32Encounter for pregnancy test and childbirth and childcare instruction
Z33Pregnant state
Z34Encounter for supervision of normal pregnancy
Z36Encounter for antenatal screening of mother
Z37Outcome of delivery
Z38Liveborn infants according to place of birth and type of delivery
Z39Encounter for maternal postpartum care and examination
Z3AWeeks of gestation
Z40Encounter for prophylactic surgery
Z41Encounter for procedures for purposes other than remedying health state
Z42Encounter for plastic and reconstructive surgery following medical procedure or healed injury
Z43Encounter for attention to artificial openings
Z44Encounter for fitting and adjustment of external prosthetic device
Z45Encounter for adjustment and management of implanted device
Z46Encounter for fitting and adjustment of other devices
Z47Orthopedic aftercare
Z48Encounter for other postprocedural aftercare
Z49Encounter for care involving renal dialysis
Z51Encounter for other aftercare and medical care
Z52Donors of organs and tissues
Z53Persons encountering health services for specific procedures and treatment, not carried out
Z55Problems related to education and literacy
Z56Problems related to employment and unemployment
Z57Occupational exposure to risk factors
Z58Problems related to physical environment
Z59Problems related to housing and economic circumstances
Z60Problems related to social environment
Z62Problems related to upbringing
Z63Other problems related to primary support group, including family circumstances
Z64Problems related to certain psychosocial circumstances
Z65Problems related to other psychosocial circumstances
Z66Do not resuscitate
Z67Blood type
Z68Body mass index [BMI]
Z69Encounter for mental health services for victim and perpetrator of abuse
Z70Counseling related to sexual attitude, behavior and orientation
Z71Persons encountering health services for other counseling and medical advice, not elsewhere classified
Z72Problems related to lifestyle
Z73Problems related to life management difficulty
Z74Problems related to care provider dependency
Z75Problems related to medical facilities and other health care
Z76Persons encountering health services in other circumstances
Z77Other contact with and (suspected) exposures hazardous to health
Z78Other specified health status
Z79Long term (current) drug therapy
Z80Family history of primary malignant neoplasm
Z81Family history of mental and behavioral disorders
Z82Family history of certain disabilities and chronic diseases (leading to disablement)
Z83Family history of other specific disorders
Z84Family history of other conditions
Z85Personal history of malignant neoplasm
Z86Personal history of certain other diseases
Z87Personal history of other diseases and conditions
Z88Allergy status to drugs, medicaments and biological substances
Z89Acquired absence of limb
Z90Acquired absence of organs, not elsewhere classified
Z91Personal risk factors, not elsewhere classified
Z92Personal history of medical treatment
Z93Artificial opening status
Z94Transplanted organ and tissue status
Z95Presence of cardiac and vascular implants and grafts
Z96Presence of other functional implants
Z97Presence of other devices
Z98Other postprocedural states
Z99Dependence on enabling machines and devices, not elsewhere classified
Transparency
Source and release
This category index is generated from Vero’s repository-backed ICD-10-CM hierarchy. Every listed category is a top-level record, and each linked category page exposes its direct child codes.
Review the CDC/NCHS ICD-10-CM sourceCategory navigation
Frequently asked questions
Which ICD-10-CM categories begin with Z?
This index lists 90 top-level categories beginning with Z from Vero’s FY 2027 U.S. ICD-10-CM reference dataset.
How do I find a more specific Z code?
Open a category below, then follow its linked child-code hierarchy until you reach the code supported by the documentation.
Which ICD-10-CM release does this Z index use?
The index uses the FY 2027 U.S. ICD-10-CM release and the repository-backed hierarchy displayed on each linked code page.
Is every Z category billable?
No. These are top-level categories used for navigation. Follow the hierarchy to a sufficiently specific code and confirm the active code set, official guidance, and payer requirements.
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