Z00
Encounter for general examination without complaint, suspected or reported diagnosis
Z00 is a non-billable ICD-10-CM code category for encounter for general examination without complaint, suspected or reported diagnosis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Z00.0 Encounter for general adult medical examination; Z00.1 Encounter for newborn, infant and child health examinations; Z00.2 Encounter for examination for period of rapid growth in childhood; Z00.3 Encounter for examination for adolescent development state and 4 more. Its coding notes include 1 Excludes1 entry and 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
These codes are not used when the examination is for diagnosing a suspected condition or for treatment. Conditions discovered are coded as additional codes, and an exam with abnormal findings needs a code for each finding.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- encounter for examination for administrative purposes (Z02.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- encounter for pre-procedural examinations (Z01.81-)
- special screening examinations (Z11-Z13)
Notes
Also from chapter/block level (4 notes)
- Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
- 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.
More specific codes under Z00 8
- Z00.0Encounter for general adult medical examinationHeader
- Z00.1Encounter for newborn, infant and child health examinationsHeader
- 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 childhoodHeader
- Z00.8Encounter for other general examinationBillable