ICD-10 Z00
Non-Billable HeaderEncounter for general examination without complaint, suspected or reported diagnosis
About ICD-10-CM Z00
ICD-10-CM code Z00 represents Encounter for general examination without complaint, suspected or reported diagnosis. This is a non-billable header code in the Factors Influencing Health Status chapter (block Z00). The 2026 edition of ICD-10-CM Z00 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with Z00. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- encounter for examination for administrative purposes (Z02.-)
Type 2 Excludes
Not included here, the excluded code is not part of Z00, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- encounter for pre-procedural examinations (Z01.81-)
- special screening examinations (Z11-Z13)
Medicare LCD Coverage for Z00
Local Coverage Determinations (LCDs) from CMS MACs that list Z00 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing Z00.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but Z00 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with Z00
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 99354 Preventive care visit for adults Family Medicine
- 99401 Preventive care visit for infants and children Family Medicine
- 99402 Preventive care visit for adolescents Family Medicine
- 99403 Preventive care visit for adults 40-64 years old Family Medicine
- 99356 Preventive care visit for adults 65 years and older Family Medicine
Codes Adjacent To Z00
Other codes in section Z00-Z13 (Persons encountering health services for examinations).
ICD-10 Z00, Billing FAQ
Is ICD-10 code Z00 billable? +
No, Z00 is a non-billable header code. Use a more specific child code from block Z00 when submitting claims.
What codes are Type 1 Excludes for Z00? +
Type 1 Excludes (never code together with Z00): encounter for examination for administrative purposes (Z02.-)
What codes are Type 2 Excludes for Z00? +
Type 2 Excludes (may be coded together when both conditions exist): encounter for pre-procedural examinations (Z01.81-); special screening examinations (Z11-Z13)
What CPT codes are commonly billed with Z00? +
Procedures frequently paired with Z00 include: 99354, 99401, 99402, 99403, 99356.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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