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ICD-10-CM 2027 diagnosis code

Z00Encounter for general examination without complaint, suspected or reported diagnosis

Not billable — use a more specific code

Z00 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.Short description: Encntr for general exam w/o complaint, susp or reprtd dx

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z00

Z00 is the ICD-10-CM diagnosis code for encounter for general examination without complaint, suspected or reported diagnosis. It belongs to block Z00-Z13 (persons encountering health services for examinations) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: Z00.0 (examination), Z00.1 (examinations), Z00.2 (childhood), Z00.3 (state), Z00.5 (tissue), Z00.6 (program), Z00.7 (childhood) and Z00.8 (examination).

Don't report Z00 together with the conditions in its Excludes1 note: encounter for examination for administrative purposes (Z02.-).

The conditions in its Excludes2 note aren't part of Z00, but may be coded alongside it if the patient has both: encounter for pre-procedural examinations (Z01.81-) and special screening examinations (Z11-Z13).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under Z00

Coding notes

Excludes1Not coded here — never report together with this code
  • encounter for examination for administrative purposes (Z02.-)
Excludes2Not included here — may be reported together if both conditions exist
  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)

Notes that apply from higher levels

Instructions written at a parent level also apply to Z00.

Codes whose notes reference Z00

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Z00

Is Z00 billable?

No. Z00 is a header code. Report one of its more specific subcodes instead.