2027 ICD-10-CM Diagnosis Code Z00Encounter for general examination without complaint, suspected or reported diagnosis

ICD-10-CM Codes›Z00–Z99›Z00-Z13›Z00

ICD-10-CM Z00
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z00 is a non-billable ICD-10-CM category code for encounter for general examination without complaint, suspected or reported diagnosis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z00.00, Z00.01, Z00.110, and Z00.111.

Code Identity

ICD-10-CM Code
Z00
Billable Status
No — Non-Billable Category
Code Describes
Encounter for general examination without complaint, suspected or reported diagnosis
Short Description
Encntr for general exam w/o complaint, susp or reprtd dx
Chapter
Z00-Z13
Persons encountering health services for examinations

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ00-Z13Persons encountering health services for examinations
CategoryZ00Encounter for general examination without complaint, suspected or reported diagnosis
This CodeZ00Encounter for general examination without complaint, suspected or reported diagnosis

Specific Coding for Encntr for general exam w/o complaint, susp or reprtd dxOverview

Non-specific codes like Z00 require more characters. Use one of these billable codes instead:

  • Z00.0 for Encounter for general adult medical examination

  • Use Z00.00 for Encounter for general adult medical examination without abnormal findings

  • Use Z00.01 for Encounter for general adult medical examination with abnormal findings

  • Z00.1 for Encounter for newborn, infant and child health examinations

  • Z00.11 for Newborn health examination

  • Z00.12 for Encounter for routine child health examination

  • Use Z00.2 for Encounter for examination for period of rapid growth in childhood

  • Use Z00.3 for Encounter for examination for adolescent development state

  • Use Z00.5 for Encounter for examination of potential donor of organ and tissue

  • Use Z00.6 for Encounter for examination for normal comparison and control in clinical research program

  • Z00.7 for Encounter for examination for period of delayed growth in childhood

  • Use Z00.70 for Encounter for examination for period of delayed growth in childhood without abnormal findings

  • Use Z00.71 for Encounter for examination for period of delayed growth in childhood with abnormal findings

  • Use Z00.8 for Encounter for other general examination

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z00: its own notes plus those printed at block Z00-Z13 and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • encounter for examination for administrative purposes (Z02.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On Z00 itself
  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)
From Block Z00-Z13 Persons encountering health services for examinations applies to 156 codes
  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Notes

General instructions on how these codes are used.

From Block Z00-Z13 Persons encountering health services for examinations applies to 156 codes
  • Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • 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.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z00, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Z00: they are not reported together with it, unless the two conditions are unrelated.

  • Z02.7 Encounter for issue of medical certificate
    encounter for general medical examination (Z00-Z01, Z02.0-Z02.6, Z02.8-Z02.9)

Patient EducationClinical

Health Checkup

Regular checkups with your health care provider are different from appointments for sickness or injury. These checkups include physical exams as well as preventive care. Preventative care may include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z00Overview

Is Z00 a billable code?

No. This is a category header that groups the codes for encounter for general examination without complaint, suspected or reported diagnosis, and headers cannot be submitted on claims. Claims for encounter for general examination without complaint, suspected or reported diagnosis need a more specific code from this category, such as Z00.00, Z00.01, and Z00.110.

Can Z00 be reported with a code from Z02?

Not as a rule. The Excludes1 note on Z00 lists "encounter for examination for administrative purposes (Z02.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).