Z00 – Encounter for general examination without complaint, suspected or reported diagnosis

ICD-10-CM 2027 diagnosis code · Persons encountering health services for examinations

Non-billable header

ICD-10-CM code Z00

Code: Z00 (claims format: Z00)
Description: Encounter for general examination without complaint, suspected or reported diagnosis
Short description: Encntr for general exam w/o complaint, susp or reprtd dx
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z00-Z13 Persons encountering health services for examinations

Billable codes under Z00

Z00 is a header code and cannot be used on claims. Choose the most specific code:

Z00.0 – Encounter for general adult medical examinationHeader (more codes below)
Z00.1 – Encounter for newborn, infant and child health examinationsHeader (more codes below)
Z00.2 – Encounter for examination for period of rapid growth in childhoodBillable
Z00.3 – Encounter for examination for adolescent development stateBillable
Z00.5 – Encounter for examination of potential donor of organ and tissueBillable
Z00.6 – Encounter for examination for normal comparison and control in clinical research programBillable
Z00.7 – Encounter for examination for period of delayed growth in childhoodHeader (more codes below)
Z00.8 – Encounter for other general examinationBillable

Notes for Z00

Excludes1 (not coded here):

encounter for examination for administrative purposes (Z02.-)

Excludes2 (not included here):

encounter for pre-procedural examinations (Z01.81-)
special screening examinations (Z11-Z13)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block Z00-Z13

Excludes2 (not included here):

examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Notes:

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

Frequently asked questions

What is ICD-10 code Z00?

Z00 is the ICD-10-CM code for encounter for general examination without complaint, suspected or reported diagnosis, in the block Z00-Z13 (Persons encountering health services for examinations).

Is Z00 a billable code?

No. Z00 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.