Persons encountering health services for examinations (Z00-Z13)

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

Z00Encounter for general examination without complaint, suspected or reported diagnosis
Excludes 1: encounter for examination for administrative purposes (Z02.-)
Excludes 2: encounter for pre-procedural examinations (Z01.81-)
› special screening examinations (Z11-Z13)

Z00.0Encounter for general adult medical examination
› Encounter for adult periodic examination (annual) (physical) and any associated laboratory and radiologic examinations
Excludes 1: encounter for examination of sign or symptom- code to sign or symptom
› general health check-up of infant or child (Z00.12.-)

Z00.00Encounter for general adult medical examination without abnormal findings
› Encounter for adult health check-up NOS

Z00.01Encounter for general adult medical examination with abnormal findings
Use Additional Code: code to identify abnormal findings

Z00.1Encounter for newborn, infant and child health examinations

Z00.11Newborn health examination
› Health check for child under 29 days old
Use Additional Code: code to identify any abnormal findings
Excludes 1: health check for child over 28 days old (Z00.12-)

Z00.110Health examination for newborn under 8 days old
› Health check for newborn under 8 days old

Z00.111Health examination for newborn 8 to 28 days old
› Health check for newborn 8 to 28 days old
› Newborn weight check

Z00.12Encounter for routine child health examination
› Health check (routine) for child over 28 days old
› Immunizations appropriate for age
› Routine developmental screening of infant or child
› Routine vision and hearing testing
Excludes 1: health check for child under 29 days old (Z00.11-)
› health supervision of foundling or other healthy infant or child (Z76.1-Z76.2)
› newborn health examination (Z00.11-)

Z00.121Encounter for routine child health examination with abnormal findings
Use Additional Code: code to identify abnormal findings

Z00.129Encounter for routine child health examination without abnormal findings
› Encounter for routine child health examination NOS

Z00.2Encounter for examination for period of rapid growth in childhood

Z00.3Encounter for examination for adolescent development state
› Encounter for puberty development state

Z00.5Encounter for examination of potential donor of organ and tissue

Z00.6Encounter for examination for normal comparison and control in clinical research program
› Examination of participant or control in clinical research program

Z00.7Encounter for examination for period of delayed growth in childhood

Z00.70Encounter for examination for period of delayed growth in childhood without abnormal findings

Z00.71Encounter for examination for period of delayed growth in childhood with abnormal findings
Use Additional Code: code to identify abnormal findings

Z00.8Encounter for other general examination
› Encounter for health examination in population surveys

Z01Encounter for other special examination without complaint, suspected or reported diagnosis
Includes: routine examination of specific system

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

Z01.0Encounter for examination of eyes and vision
Excludes 1: examination for driving license (Z02.4)

Z01.00Encounter for examination of eyes and vision without abnormal findings
› Encounter for examination of eyes and vision NOS

Z01.01Encounter for examination of eyes and vision with abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.02Encounter for examination of eyes and vision following failed vision screening
Excludes 1: encounter for examination of eyes and vision with abnormal findings (Z01.01)
› encounter for examination of eyes and vision without abnormal findings (Z01.00)

Z01.020Encounter for examination of eyes and vision following failed vision screening without abnormal findings

Z01.021Encounter for examination of eyes and vision following failed vision screening with abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.1Encounter for examination of ears and hearing

Z01.10Encounter for examination of ears and hearing without abnormal findings
› Encounter for examination of ears and hearing NOS

Z01.11Encounter for examination of ears and hearing with abnormal findings

Z01.110Encounter for hearing examination following failed hearing screening

Z01.118Encounter for examination of ears and hearing with other abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.12Encounter for hearing conservation and treatment

Z01.2Encounter for dental examination and cleaning

Z01.20Encounter for dental examination and cleaning without abnormal findings
› Encounter for dental examination and cleaning NOS

Z01.21Encounter for dental examination and cleaning with abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.3Encounter for examination of blood pressure

Z01.30Encounter for examination of blood pressure without abnormal findings
› Encounter for examination of blood pressure NOS

Z01.31Encounter for examination of blood pressure with abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.4Encounter for gynecological examination
Excludes 2: pregnancy examination or test (Z32.0-)
› routine examination for contraceptive maintenance (Z30.4-)

Z01.41Encounter for routine gynecological examination
› Encounter for general gynecological examination with or without cervical smear
› Encounter for gynecological examination (general) (routine) NOS
› Encounter for pelvic examination (annual) (periodic)
Use Additional Code: code:
› for screening for human papillomavirus, if applicable, (Z11.51)
› for screening vaginal pap smear, if applicable (Z12.72)
› to identify acquired absence of uterus, if applicable (Z90.71-)
Excludes 1: gynecologic examination status-post hysterectomy for malignant condition (Z08)
› screening cervical pap smear not a part of a routine gynecological examination (Z12.4)

Z01.411Encounter for gynecological examination (general) (routine) with abnormal findings
Use Additional Code: code to identify abnormal findings

Z01.419Encounter for gynecological examination (general) (routine) without abnormal findings

Z01.42Encounter for cervical smear to confirm findings of recent normal smear following initial abnormal smear

Z01.8Encounter for other specified special examinations

Z01.81Encounter for preprocedural examinations
› Encounter for preoperative examinations
› Encounter for radiological and imaging examinations as part of preprocedural examination

Z01.810Encounter for preprocedural cardiovascular examination

Z01.811Encounter for preprocedural respiratory examination

Z01.812Encounter for preprocedural laboratory examination
› Blood and urine tests prior to treatment or procedure

Z01.818Encounter for other preprocedural examination
› Encounter for preprocedural examination NOS
› Encounter for examinations prior to antineoplastic chemotherapy

Z01.82Encounter for allergy testing
Excludes 1: encounter for antibody response examination (Z01.84)

Z01.83Encounter for blood typing
› Encounter for Rh typing

Z01.84Encounter for antibody response examination
› Encounter for immunity status testing
Excludes 1: encounter for allergy testing (Z01.82)

Z01.89Encounter for other specified special examinations

Z02Encounter for administrative examination

Z02.0Encounter for examination for admission to educational institution
› Encounter for examination for admission to preschool (education)
› Encounter for examination for re-admission to school following illness or medical treatment

Z02.1Encounter for pre-employment examination

Z02.2Encounter for examination for admission to residential institution
Excludes 1: examination for admission to prison (Z02.89)

Z02.3Encounter for examination for recruitment to armed forces

Z02.4Encounter for examination for driving license

Z02.5Encounter for examination for participation in sport
Excludes 1: blood-alcohol and blood-drug test (Z02.83)

Z02.6Encounter for examination for insurance purposes

Z02.7Encounter for issue of medical certificate
Excludes 1: encounter for general medical examination (Z00-Z01, Z02.0-Z02.6, Z02.8-Z02.9)

Z02.71Encounter for disability determination
› Encounter for issue of medical certificate of incapacity
› Encounter for issue of medical certificate of invalidity

Z02.79Encounter for issue of other medical certificate

Z02.8Encounter for other administrative examinations

Z02.81Encounter for paternity testing

Z02.82Encounter for adoption services

Z02.83Encounter for blood-alcohol and blood-drug test
Use Additional Code: code for findings of alcohol or drugs in blood (R78.-)

Z02.84Encounter for child welfare exam
› Encounter for child welfare screening exam
Excludes 2: encounter for examination and observation for alleged child physical abuse (Z04.72)
› encounter for examination and observation for alleged child rape (Z04.42)

Z02.89Encounter for other administrative examinations
› Encounter for examination for admission to prison
› Encounter for examination for admission to summer camp
› Encounter for immigration examination
› Encounter for naturalization examination
› Encounter for premarital examination
Excludes 1: health supervision of foundling or other healthy infant or child (Z76.1-Z76.2)

Z02.9Encounter for administrative examinations, unspecified

Z03Encounter for medical observation for suspected diseases and conditions ruled out
› 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.
Excludes 1: contact with and (suspected) exposures hazardous to health (Z77.-)
› encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
› person with feared complaint in whom no diagnosis is made (Z71.1)
› signs or symptoms under study- code to signs or symptoms

Z03.6Encounter for observation for suspected toxic effect from ingested substance ruled out
› Encounter for observation for suspected adverse effect from drug
› Encounter for observation for suspected poisoning

Z03.7Encounter for suspected maternal and fetal conditions ruled out
› Encounter for suspected maternal and fetal conditions not found
Excludes 1: known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)

Z03.71Encounter for suspected problem with amniotic cavity and membrane ruled out
› Encounter for suspected oligohydramnios ruled out
› Encounter for suspected polyhydramnios ruled out

Z03.72Encounter for suspected placental problem ruled out

Z03.73Encounter for suspected fetal anomaly ruled out

Z03.74Encounter for suspected problem with fetal growth ruled out

Z03.75Encounter for suspected cervical shortening ruled out

Z03.79Encounter for other suspected maternal and fetal conditions ruled out

Z03.8Encounter for observation for other suspected diseases and conditions ruled out

Z03.81Encounter for observation for suspected exposure to biological agents ruled out

Z03.810Encounter for observation for suspected exposure to anthrax ruled out

Z03.818Encounter for observation for suspected exposure to other biological agents ruled out

Z03.82Encounter for observation for suspected foreign body ruled out
Excludes 1: retained foreign body (Z18.-)
› retained foreign body in eyelid (H02.81)
› residual foreign body in soft tissue (M79.5)
Excludes 2: confirmed foreign body ingestion or aspiration including:
› foreign body in alimentary tract (T18)
› foreign body in ear (T16)
› foreign body on external eye (T15)
› foreign body in respiratory tract (T17)

Z03.821Encounter for observation for suspected ingested foreign body ruled out

Z03.822Encounter for observation for suspected aspirated (inhaled) foreign body ruled out

Z03.823Encounter for observation for suspected inserted (injected) foreign body ruled out
› Encounter for observation for suspected inserted (injected) foreign body in eye ruled out
› Encounter for observation for suspected inserted (injected) foreign body in orifice ruled out
› Encounter for observation for suspected inserted (injected) foreign body in skin ruled out

Z03.83Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out
› Encounter for observation for apnea alarm without findings
› Encounter for observation for bradycardia alarm without findings
› Encounter for observation for malfunction of home cardiorespiratory monitor
› Encounter for observation for non-specific findings home physiologic monitoring device
› Encounter for observation for pulse oximeter alarm without findings
Excludes 1: apnea NOS (R06.81)
› neonatal bradycardia (P29.12)
› newborn apnea (P28.4-)
› primary sleep apnea of newborn (P28.3-)
› sleep apnea (G47.3-)

Z03.89Encounter for observation for other suspected diseases and conditions ruled out

Z04Encounter for examination and observation for other reasons
Includes: encounter for examination for medicolegal reasons
› 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.

Z04.1Encounter for examination and observation following transport accident
Excludes 1: encounter for examination and observation following work accident (Z04.2)

Z04.2Encounter for examination and observation following work accident

Z04.3Encounter for examination and observation following other accident

Z04.4Encounter for examination and observation following alleged rape
› Encounter for examination and observation of victim following alleged rape
› Encounter for examination and observation of victim following alleged sexual abuse

Z04.41Encounter for examination and observation following alleged adult rape
› Suspected adult rape, ruled out
› Suspected adult sexual abuse, ruled out

Z04.42Encounter for examination and observation following alleged child rape
› Suspected child rape, ruled out
› Suspected child sexual abuse, ruled out

Z04.6Encounter for general psychiatric examination, requested by authority

Z04.7Encounter for examination and observation following alleged physical abuse

Z04.71Encounter for examination and observation following alleged adult physical abuse
› Suspected adult physical abuse, ruled out
Excludes 1: confirmed case of adult physical abuse (T74.-)
› encounter for examination and observation following alleged adult sexual abuse (Z04.41)
› suspected case of adult physical abuse, not ruled out (T76.-)

Z04.72Encounter for examination and observation following alleged child physical abuse
› Suspected child physical abuse, ruled out
Excludes 1: confirmed case of child physical abuse (T74.-)
› encounter for examination and observation following alleged child sexual abuse (Z04.42)
› suspected case of child physical abuse, not ruled out (T76.-)

Z04.8Encounter for examination and observation for other specified reasons
› Encounter for examination and observation for request for expert evidence

Z04.81Encounter for examination and observation of victim following forced sexual exploitation

Z04.82Encounter for examination and observation of victim following forced labor exploitation

Z04.89Encounter for examination and observation for other specified reasons

Z04.9Encounter for examination and observation for unspecified reason
› Encounter for observation NOS

Z05Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
› 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.

Z05.0Observation and evaluation of newborn for suspected cardiac condition ruled out

Z05.1Observation and evaluation of newborn for suspected infectious condition ruled out

Z05.2Observation and evaluation of newborn for suspected neurological condition ruled out

Z05.3Observation and evaluation of newborn for suspected respiratory condition ruled out

Z05.4Observation and evaluation of newborn for suspected genetic, metabolic or immunologic condition ruled out

Z05.41Observation and evaluation of newborn for suspected genetic condition ruled out

Z05.42Observation and evaluation of newborn for suspected metabolic condition ruled out

Z05.43Observation and evaluation of newborn for suspected immunologic condition ruled out

Z05.5Observation and evaluation of newborn for suspected gastrointestinal condition ruled out

Z05.6Observation and evaluation of newborn for suspected genitourinary condition ruled out

Z05.7Observation and evaluation of newborn for suspected skin, subcutaneous, musculoskeletal and connective tissue condition ruled out

Z05.71Observation and evaluation of newborn for suspected skin and subcutaneous tissue condition ruled out

Z05.72Observation and evaluation of newborn for suspected musculoskeletal condition ruled out

Z05.73Observation and evaluation of newborn for suspected connective tissue condition ruled out

Z05.8Observation and evaluation of newborn for other specified suspected condition ruled out

Z05.81Observation and evaluation of newborn for suspected condition related to home physiologic monitoring device ruled out
› Encounter for observation of newborn for apnea alarm without findings
› Encounter for observation of newborn for bradycardia alarm without findings
› Encounter for observation of newborn for malfunction of home cardiorespiratory monitor
› Encounter for observation of newborn for non-specific findings home physiologic monitoring device
› Encounter for observation of newborn for pulse oximeter alarm without findings
Excludes 1: encounter for observation for suspected conditions related to home physiologic monitoring device ruled out (Z03.83)
› neonatal bradycardia (P29.12)
› other newborn apnea (P28.4-)
› primary sleep apnea of newborn (P28.3-)

Z05.89Observation and evaluation of newborn for other specified suspected condition ruled out

Z05.9Observation and evaluation of newborn for unspecified suspected condition ruled out

Z08Encounter for follow-up examination after completed treatment for malignant neoplasm
› Medical surveillance following completed treatment
Use Additional Code: code to identify any acquired absence of organs (Z90.-)
Use Additional Code: code to identify the personal history of malignant neoplasm (Z85.-)
Excludes 1: aftercare following medical care (Z43-Z49, Z51)

Z09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
› Medical surveillance following completed treatment
Use Additional Code: code to identify any applicable history of disease code (Z86.-, Z87.-)
Excludes 1: aftercare following medical care (Z43-Z49, Z51)
› surveillance of contraception (Z30.4-)
› surveillance of prosthetic and other medical devices (Z44-Z46)

Z11Encounter for screening for infectious and parasitic diseases
› 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.
Excludes 1: encounter for diagnostic examination-code to sign or symptom

Z11.0Encounter for screening for intestinal infectious diseases

Z11.1Encounter for screening for respiratory tuberculosis
› Encounter for screening for active tuberculosis disease

Z11.2Encounter for screening for other bacterial diseases

Z11.3Encounter for screening for infections with a predominantly sexual mode of transmission
Excludes 2: encounter for screening for human immunodeficiency virus [HIV] (Z11.4)
› encounter for screening for human papillomavirus (Z11.51)

Z11.4Encounter for screening for human immunodeficiency virus [HIV]

Z11.5Encounter for screening for other viral diseases
Excludes 2: encounter for screening for viral intestinal disease (Z11.0)

Z11.51Encounter for screening for human papillomavirus (HPV)

Z11.52Encounter for screening for COVID-19

Z11.59Encounter for screening for other viral diseases

Z11.6Encounter for screening for other protozoal diseases and helminthiases
Excludes 2: encounter for screening for protozoal intestinal disease (Z11.0)

Z11.7Encounter for testing for latent tuberculosis infection

Z11.8Encounter for screening for other infectious and parasitic diseases
› Encounter for screening for chlamydia
› Encounter for screening for rickettsial
› Encounter for screening for spirochetal
› Encounter for screening for mycoses

Z11.9Encounter for screening for infectious and parasitic diseases, unspecified

Z12Encounter for screening for malignant neoplasms
› 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.
Use Additional Code: code to identify any family history of malignant neoplasm (Z80.-)
Excludes 1: encounter for diagnostic examination-code to sign or symptom

Z12.0Encounter for screening for malignant neoplasm of stomach

Z12.1Encounter for screening for malignant neoplasm of intestinal tract

Z12.10Encounter for screening for malignant neoplasm of intestinal tract, unspecified

Z12.11Encounter for screening for malignant neoplasm of colon
› Encounter for screening colonoscopy NOS

Z12.12Encounter for screening for malignant neoplasm of rectum

Z12.13Encounter for screening for malignant neoplasm of small intestine

Z12.2Encounter for screening for malignant neoplasm of respiratory organs

Z12.3Encounter for screening for malignant neoplasm of breast

Z12.31Encounter for screening mammogram for malignant neoplasm of breast
Excludes 1: inconclusive mammogram (R92.2)

Z12.39Encounter for other screening for malignant neoplasm of breast

Z12.4Encounter for screening for malignant neoplasm of cervix
› Encounter for screening pap smear for malignant neoplasm of cervix
Excludes 1: when screening is part of general gynecological examination (Z01.4-)
Excludes 2: encounter for screening for human papillomavirus (Z11.51)

Z12.5Encounter for screening for malignant neoplasm of prostate

Z12.6Encounter for screening for malignant neoplasm of bladder

Z12.7Encounter for screening for malignant neoplasm of other genitourinary organs

Z12.71Encounter for screening for malignant neoplasm of testis

Z12.72Encounter for screening for malignant neoplasm of vagina
› Vaginal pap smear status-post hysterectomy for non-malignant condition
Use Additional Code: code to identify acquired absence of uterus (Z90.71-)
Excludes 1: vaginal pap smear status-post hysterectomy for malignant conditions (Z08)

Z12.73Encounter for screening for malignant neoplasm of ovary

Z12.79Encounter for screening for malignant neoplasm of other genitourinary organs

Z12.8Encounter for screening for malignant neoplasm of other sites

Z12.81Encounter for screening for malignant neoplasm of oral cavity

Z12.82Encounter for screening for malignant neoplasm of nervous system

Z12.83Encounter for screening for malignant neoplasm of skin

Z12.89Encounter for screening for malignant neoplasm of other sites

Z12.9Encounter for screening for malignant neoplasm, site unspecified

Z13Encounter for screening for other diseases and disorders
› 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.
Excludes 1: encounter for diagnostic examination-code to sign or symptom

Z13.0Encounter for screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

Z13.1Encounter for screening for diabetes mellitus

Z13.2Encounter for screening for nutritional, metabolic and other endocrine disorders

Z13.21Encounter for screening for nutritional disorder

Z13.22Encounter for screening for metabolic disorder

Z13.220Encounter for screening for lipoid disorders
› Encounter for screening for cholesterol level
› Encounter for screening for hypercholesterolemia
› Encounter for screening for hyperlipidemia

Z13.228Encounter for screening for other metabolic disorders

Z13.29Encounter for screening for other suspected endocrine disorder
Excludes 2: encounter for screening for diabetes mellitus (Z13.1)

Z13.3Encounter for screening examination for mental health and behavioral disorders

Z13.30Encounter for screening examination for mental health and behavioral disorders, unspecified

Z13.31Encounter for screening for depression
› Encounter for screening for depression, adult
› Encounter for screening for depression for child or adolescent

Z13.32Encounter for screening for maternal depression
› Encounter for screening for perinatal depression

Z13.39Encounter for screening examination for other mental health and behavioral disorders
› Encounter for screening for alcoholism
› Encounter for screening for intellectual disabilities

Z13.4Encounter for screening for certain developmental disorders in childhood
› Encounter for development testing of infant or child
› Encounter for screening for developmental handicaps in early childhood
Excludes 2: encounter for routine child health examination (Z00.12-)

Z13.40Encounter for screening for unspecified developmental delays

Z13.41Encounter for autism screening

Z13.42Encounter for screening for global developmental delays (milestones)
› Encounter for screening for developmental handicaps in early childhood

Z13.49Encounter for screening for other developmental delays

Z13.5Encounter for screening for eye and ear disorders
Excludes 2: encounter for general hearing examination (Z01.1-)
› encounter for general vision examination (Z01.0-)

Z13.6Encounter for screening for cardiovascular disorders

Z13.7Encounter for screening for genetic and chromosomal anomalies
Excludes 1: genetic testing for procreative management (Z31.4-)

Z13.71Encounter for nonprocreative screening for genetic disease carrier status

Z13.79Encounter for other screening for genetic and chromosomal anomalies

Z13.8Encounter for screening for other specified diseases and disorders
Excludes 2: screening for malignant neoplasms (Z12.-)

Z13.81Encounter for screening for digestive system disorders

Z13.810Encounter for screening for upper gastrointestinal disorder

Z13.811Encounter for screening for lower gastrointestinal disorder
Excludes 1: encounter for screening for intestinal infectious disease (Z11.0)

Z13.818Encounter for screening for other digestive system disorders

Z13.82Encounter for screening for musculoskeletal disorder

Z13.820Encounter for screening for osteoporosis

Z13.828Encounter for screening for other musculoskeletal disorder

Z13.83Encounter for screening for respiratory disorder NEC
Excludes 1: encounter for screening for respiratory tuberculosis (Z11.1)

Z13.84Encounter for screening for dental disorders

Z13.85Encounter for screening for nervous system disorders

Z13.850Encounter for screening for traumatic brain injury

Z13.858Encounter for screening for other nervous system disorders

Z13.88Encounter for screening for disorder due to exposure to contaminants
Excludes 1: those exposed to contaminants without suspected disorders (Z57.-, Z77.-)

Z13.89Encounter for screening for other disorder
› Encounter for screening for genitourinary disorders

Z13.9Encounter for screening, unspecified