Z00.6
Encounter for examination for normal comparison and control in clinical research program
Z00.6 (also written Z006) is a billable ICD-10-CM diagnosis code for encounter for examination for normal comparison and control in clinical research program. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 13 codes in category Z00 (Encounter for general examination without complaint, suspected or reported diagnosis). The Alphabetic Index lists it under 8 entries. Its coding notes include 1 Excludes1 entry and 3 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
These codes are not used when the examination is for diagnosing a suspected condition or for treatment. Conditions discovered are coded as additional codes, and an exam with abnormal findings needs a code for each finding.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Inclusion terms
Conditions classified to this code.
- Examination of participant or control in clinical research program
Notes
Also from chapter/block level (4 notes)
- Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
- 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.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 8 entries
- Admission (for), clinical research investigation (control) (normal comparison) (participant)
- Admission (for), examination at health care facility (adult), clinical research investigation (control) (normal comparison) (participant)
- Clinical research investigation (clinical trial) (control subject) (normal comparison) (participant)
- Examination (for) (following) (general) (of) (routine), clinical research control or normal comparison (control) (participant)
- Examination (for) (following) (general) (of) (routine), medical (adult) (for) (of), clinical research, normal subject (control) (participant)
- Examination (for) (following) (general) (of) (routine), medical (adult) (for) (of), control subject in clinical research (normal comparison) (participant)
- Investigation, clinical research subject (control) (normal comparison) (participant)
- Person (with), admitted for clinical research, as a control subject (normal comparison) (participant)