GZ1 Psychological Tests - None ICD-10-PCS
The GZ1 code range contains 6 ICD-10-PCS codes for Psychological Tests procedures on the none. 5 of the codes are billable and valid for inpatient claim submission in fiscal year 2026.
Root Operation Definition
Psychological Tests: The administration and interpretation of standardized psychological tests and measurement instruments for the assessment of psychological function.
Codes in the GZ1 Range 6 codes · 5 billable
- GZ1 Mental Health, Psychological TestsNon-billable header
- GZ10ZZZ Psychological Tests, Developmental
- GZ11ZZZ Psychological Tests, Personality and Behavioral
- GZ12ZZZ Psychological Tests, Intellectual and Psychoeducational
- GZ13ZZZ Psychological Tests, Neuropsychological
- GZ14ZZZ Psychological Tests, Neurobehavioral and Cognitive Status
About the GZ1 Code Range
The ICD-10-PCS root operation Psychological Tests (GZ1) refers to the administration and scoring of standardized assessments to evaluate an individual’s mental health or cognitive functioning. This operation is classified under the Mental Health section and is essential for diagnosing or guiding treatment of psychological conditions.
Within this classification, various specialized psychological tests are coded to capture the specific nature of the assessment. For example, Developmental tests (code GZ10ZZZ) measure growth and maturation benchmarks, while Personality and Behavioral tests (GZ11ZZZ) evaluate traits and behaviors. Other important categories include Intellectual and Psychoeducational tests (GZ12ZZZ), which assess cognitive abilities and learning, and Neuropsychological tests (GZ13ZZZ), designed to examine brain function and neurological impairment. Additionally, Neurobehavioral and Cognitive Status tests (GZ14ZZZ) focus on evaluating cognitive deficits related to brain injury or disease. These codes allow precise documentation of psychological testing procedures for clinical and billing purposes.
Questions About This Page
How many billable codes are in the GZ1 range?
Of the 6 codes in this range, 5 are billable and valid for inpatient claim submission from October 1, 2025 through September 30, 2026. Table header codes group them but cannot be reported on claims.
What does the GZ1 range classify?
The range classifies Psychological Tests procedures, the administration and interpretation of standardized psychological tests and measurement instruments for the assessment of psychological function, performed on the none. Each code adds the body part, approach, device, and qualifier in characters four through seven, and links to its own reference page.
Related References
Source: CMS FY 2026 ICD-10-PCS order file and code tables, effective October 1, 2025 through September 30, 2026.
