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ICD-10-CM-2019 Diagnosis Codes Overview
ICD-10-CM-2019 > Z00-Z99
Chapter 21
Factors influencing health status and contact with health services
Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
(a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
(b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Z00-Z13 Persons encountering health services for examinations
Z14-Z15 Genetic carrier and genetic susceptibility to disease
Z16-Z16 Resistance to antimicrobial drugs
Z17-Z17 Estrogen receptor status
Z18-Z18 Retained foreign body fragments
Z19-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-Z66 Do not resuscitate status
Z67-Z67 Blood type
Z68-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


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