Chapter 21: Factors influencing health status and contact with health services (Z00-Z99)

ICD-10-CM 2027 chapter 21 contains 15 code blocks with 1,425 billable codes.

Code blocks

Block	Title	Billable
`Z00-Z13`	Persons encountering health services for examinations	156
`Z14-Z15`	Genetic carrier and genetic susceptibility to disease	18
`Z16`	Resistance to antimicrobial drugs (Z16)	19
`Z17`	Estrogen, and other hormones and factors receptor status (Z17)	10
`Z18`	Retained foreign body fragments (Z18)	14
`Z19`	Hormone sensitivity malignancy status (Z19)	2
`Z20-Z29`	Persons with potential health hazards related to communicable diseases	65
`Z30-Z39`	Persons encountering health services in circumstances related to reproduction	160
`Z40-Z53`	Encounters for other specific health care	164
`Z55-Z65`	Persons with potential health hazards related to socioeconomic and psychosocial circumstances	117
`Z66`	Do not resuscitate status (Z66)	1
`Z67`	Blood type (Z67)	14
`Z68`	Body mass index [BMI] (Z68)	33
`Z69-Z76`	Persons encountering health services in other circumstances	85
`Z77-Z99`	Persons with potential health hazards related to family and personal history and certain conditions influencing health status	567

Notes:

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.