ICD-10-CM — Chapter 21

Factors influencing health status and contact with health services

Tabular List

Find your ICD-10-CM code by first selecting the most applicable chapter



Factors influencing health status and contact with health services

Note: 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.

Expand All Chapter #21 contains the following ICD-10-CM sections:

Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.

Excludes1

  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)
  • Z00 Encounter for general examination without complaint, suspected or reported diagnosis

  • Z01 Encounter for other special examination without complaint, suspected or reported diagnosis

    Note: Codes from category Z01 represent the reason for the encounter. A separate procedure code is required to identify any examinations or procedures performed

  • Z02 Encounter for administrative examination

  • Z03 Encounter for medical observation for suspected diseases and conditions ruled out

    Inclusion term(s):

    • This category is to be used when a person without a diagnosis is suspected of having an abnormal condition, without signs or symptoms, which requires study, but after examination and observation, is ruled out. This category is also for use for administrative and legal observation status.
  • Z04 Encounter for examination and observation for other reasons

  • Z05 Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out

    Inclusion term(s):

    • This category is to be used for newborns, within the neonatal period (the first 28 days of life), who are suspected of having an abnormal condition, but without signs or symptoms, and which, after examination and observation, is ruled out.
  • Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm

    Inclusion term(s):

    • Medical surveillance following completed treatment
  • Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

    Inclusion term(s):

    • Medical surveillance following completed treatment
  • Z11 Encounter for screening for infectious and parasitic diseases

    Inclusion term(s):

    • Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.
  • Z12 Encounter for screening for malignant neoplasms

    Inclusion term(s):

    • Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.
  • Z13 Encounter for screening for other diseases and disorders

    Inclusion term(s):

    • Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.
  • Z14 Genetic carrier

  • Z15 Genetic susceptibility to disease

  • Z16 Resistance to antimicrobial drugs

    Note: The codes in this category are provided for use as additional codes to identify the resistance and non-responsiveness of a condition to antimicrobial drugs.

  • Z17 Estrogen receptor status

  • Z18 Retained foreign body fragments

  • Z19 Hormone sensitivity malignancy status

  • Z20 Contact with and (suspected) exposure to communicable diseases

  • Z21 Asymptomatic human immunodeficiency virus [HIV] infection status

    Inclusion term(s):

    • HIV positive NOS
  • Z22 Carrier of infectious disease

  • Z23 Encounter for immunization

    Note: procedure codes are required to identify the types of immunizations given

  • Z28 Immunization not carried out and underimmunization status

  • Z29 Encounter for other prophylactic measures

  • Z30 Encounter for contraceptive management

  • Z31 Encounter for procreative management

  • Z32 Encounter for pregnancy test and childbirth and childcare instruction

  • Z33 Pregnant state

  • Z34 Encounter for supervision of normal pregnancy

  • Z36 Encounter for antenatal screening of mother

  • Z37 Outcome of delivery

    Inclusion term(s):

    • This category is intended for use as an additional code to identify the outcome of delivery on the mother's record. It is not for use on the newborn record.
  • Z38 Liveborn infants according to place of birth and type of delivery

    Inclusion term(s):

    • This category is for use as the principal code on the initial record of a newborn baby. It is to be used for the initial birth record only. It is not to be used on the mother's record.
  • Z39 Encounter for maternal postpartum care and examination

  • Z3A Weeks of gestation

    Note: Codes from category Z3A are for use, only on the maternal record, to indicate the weeks of gestation of the pregnancy, if known.

Excludes2

  • follow-up examination for medical surveillance after treatment (Z08-Z09)
  • Z40 Encounter for prophylactic surgery

  • Z41 Encounter for procedures for purposes other than remedying health state

  • Z42 Encounter for plastic and reconstructive surgery following medical procedure or healed injury

  • Z43 Encounter for attention to artificial openings

  • Z44 Encounter for fitting and adjustment of external prosthetic device

  • Z45 Encounter for adjustment and management of implanted device

  • Z46 Encounter for fitting and adjustment of other devices

  • Z47 Orthopedic aftercare

  • Z48 Encounter for other postprocedural aftercare

  • Z49 Encounter for care involving renal dialysis

  • Z51 Encounter for other aftercare and medical care

  • Z52 Donors of organs and tissues

  • Z53 Persons encountering health services for specific procedures and treatment, not carried out

  • Z55 Problems related to education and literacy

  • Z56 Problems related to employment and unemployment

  • Z57 Occupational exposure to risk factors

  • Z59 Problems related to housing and economic circumstances

  • Z60 Problems related to social environment

  • Z62 Problems related to upbringing

  • Z63 Other problems related to primary support group, including family circumstances

  • Z64 Problems related to certain psychosocial circumstances

  • Z65 Problems related to other psychosocial circumstances

  • Z68 Body mass index [BMI]

    Note: BMI adult codes are for use for persons 21 years of age or older
    BMI pediatric codes are for use for persons 2-20 years of age. These percentiles are based on the growth charts published by the Centers for Disease Control and Prevention (CDC)

    Inclusion term(s):

    • Kilograms per meters squared
  • Z69 Encounter for mental health services for victim and perpetrator of abuse

  • Z70 Counseling related to sexual attitude, behavior and orientation

  • Z71 Persons encountering health services for other counseling and medical advice, not elsewhere classified

  • Z72 Problems related to lifestyle

  • Z73 Problems related to life management difficulty

  • Z74 Problems related to care provider dependency

  • Z75 Problems related to medical facilities and other health care

  • Z76 Persons encountering health services in other circumstances

  • Z77 Other contact with and (suspected) exposures hazardous to health

  • Z78 Other specified health status

  • Z79 Long term (current) drug therapy

  • Z80 Family history of primary malignant neoplasm

  • Z81 Family history of mental and behavioral disorders

  • Z82 Family history of certain disabilities and chronic diseases (leading to disablement)

  • Z83 Family history of other specific disorders

  • Z84 Family history of other conditions

  • Z85 Personal history of malignant neoplasm

  • Z86 Personal history of certain other diseases

  • Z87 Personal history of other diseases and conditions

  • Z88 Allergy status to drugs, medicaments and biological substances

  • Z89 Acquired absence of limb

  • Z90 Acquired absence of organs, not elsewhere classified

  • Z91 Personal risk factors, not elsewhere classified

  • Z92 Personal history of medical treatment

  • Z93 Artificial opening status

  • Z94 Transplanted organ and tissue status

  • Z95 Presence of cardiac and vascular implants and grafts

  • Z96 Presence of other functional implants

  • Z97 Presence of other devices

  • Z98 Other postprocedural states

  • Z99 Dependence on enabling machines and devices, not elsewhere classified