Z00
Encounter for general examination without complaint, suspected or reported diagnosis
Choose the additional character
Z00 needs more characters to be billable. Pick the specific code below.
- Z00.0Encounter for general adult medical examinationMore levels
- Z00.1Encounter for newborn, infant and child health examinationsMore levels
- Z00.2Encounter for examination for period of rapid growth in childhoodBillable
- Z00.3Encounter for examination for adolescent development stateBillable
- Z00.5Encounter for examination of potential donor of organ and tissueBillable
- Z00.6Encounter for examination for normal comparison and control in clinical research programBillable
- Z00.7Encounter for examination for period of delayed growth in childhoodMore levels
- Z00.8Encounter for other general examinationBillable
This code does not map to a risk-adjusting HCC in the loaded models.
Coding notes
Excludes 1 never coded together · Excludes 2 may co-exist
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.
Official Guidelines for Z00
FY 2026 ›Sections that reference Z00
- I.C.21.c.12)Routine and Administrative Examinations
… The Z codes/categories for routine and administrative examinations: Z00 Encounter for general examination without complaint, suspected or reported diagnosis Z01 Encounter for other special …
- I.C.21.c.15)Z Codes That May Only be Principal/First-Listed Diagnosis
… diagnosis, except when there are multiple encounters on the same day and the medical records for the encounters are combined: Z00 Encounter for general examination without complaint, suspected or reported diagnosis Except: Z00.6 Z01 Encounter for other …
- I.C.21.c.16)Newborns and Infants
… Newborn Z codes/subcategories/categories: Z76.1 Encounter for health supervision and care of foundling Z00.1- Encounter for routine child health examination Z38 Liveborn infants according to place of birth and type of delivery
- IV.PEncounters for general medical examinations with abnormal findingsOutpatient services
The subcategories for encounters for general medical examinations, Z00.0- and encounter for routine child health examination, Z00.12-, provide codes for with and without abnormal findings. …
- I.B.3Code or codes from A00.0 through T88.9, Z00-Z99.8, U00-U85Conventions & general rules
The appropriate code or codes from A00.0 through T88.9, Z00-Z99.8, and U00-U85 must be used to identify diagnoses, symptoms, conditions, problems, complaints or other reason(s) for the …
- I.C.20.a.1)Used with any code in the range of A00.0-T88.9, Z00-Z99Chapter 20
An external cause code may be used with any code in the range of A00.0-T88.9, Z00-Z99, classification that represents a health condition due to an external cause. …
Showing 6 of 8. Search the guidelines for Z00. Sections whose FY 2026 text names Z00, its Z00 category, or a range containing it — the chapter guidance above is the authoritative source.