Coding and coverage · ICD-10-CM

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

Not billable (header)Chapter 21

Report one of the more specific codes below.

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Codes under this one

  • Z00.0 Encounter for general adult medical examinationHeader
  • Z00.1 Encounter for newborn, infant and child health examinationsHeader
  • Z00.2 Encounter for examination for period of rapid growth in childhood
  • Z00.3 Encounter for examination for adolescent development state
  • Z00.5 Encounter for examination of potential donor of organ and tissue
  • Z00.6 Encounter for examination for normal comparison and control in clinical research program
  • Z00.7 Encounter for examination for period of delayed growth in childhoodHeader
  • Z00.8 Encounter for other general examination

Instructional notes

Chapter 21

Notes
  • 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.

Section Z00-Z13

Excludes2Not included here: the patient may have both; report both when both are present.
  • 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.

This code

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • encounter for examination for administrative purposes (Z02.-)
Excludes2Not included here: the patient may have both; report both when both are present.
  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)

Chapter 21: Factors influencing health status and contact with health services · Z00-Z13 Persons encountering health services for examinations (Z00-Z13)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.