Billing for Psychological Testing: Codes, Documentation & Authorization
Overview
Billing for Psychological Testing: Codes, Documentation & Authorization
Psychological testing represents a significant revenue opportunity for qualified providers—but also one of the most complex areas of mental health billing. Testing codes changed substantially in 2019, payers have specific authorization requirements, and documentation standards are exacting.
Key takeaways
- Billing for Psychological Testing: Codes, Documentation & Authorization Psychological testing represents a significant revenue opportunity for qualified providers—but also one of the most complex areas of mental health billing.
- Testing codes changed substantially in 2019, payers have specific authorization requirements, and documentation standards are exacting.
- This comprehensive guide covers everything you need to know to bill psychological and neuropsychological testing accurately and maximize reimbursement.
- Understanding Psychological Testing Codes The 2019 Code Changes Prior to 2019, psychological testing was billed using codes 96101-96103.
- These were replaced with a new code structure that distinguishes between: Evaluation services (clinician work) Administration and scoring (technical work) Test interpretation and report writing (clinician work) The new codes also differentiate psychological testing from neuropsychological testing.
Details
This comprehensive guide covers everything you need to know to bill psychological and neuropsychological testing accurately and maximize reimbursement.
Understanding Psychological Testing Codes
The 2019 Code Changes
Prior to 2019, psychological testing was billed using codes 96101-96103. These were replaced with a new code structure that distinguishes between:
- Evaluation services (clinician work)
- Administration and scoring (technical work)
- Test interpretation and report writing (clinician work)
The new codes also differentiate psychological testing from neuropsychological testing.
Code Categories Overview
| Code Range | Description | Who Bills |
|---|---|---|
| 96130-96131 | Psychological testing evaluation services | Psychologist/qualified professional |
| 96132-96133 | Neuropsychological testing evaluation services | Psychologist/qualified professional |
| 96136-96137 | Psychological/neuropsych administration by psychologist | Psychologist |
| 96138-96139 | Psychological/neuropsych administration by technician | Technician under supervision |
Key Distinctions
Psychological vs. Neuropsychological Testing:
Psychological testing (96130-96131, 96136-96139):
- Personality assessment
- Emotional/behavioral functioning
- Intellectual assessment (IQ testing)
- Achievement testing
- Projective testing
Neuropsychological testing (96132-96133, 96136-96139):
- Brain-behavior relationships
- Cognitive domain assessment (memory, attention, executive function)
- Evaluation for neurological conditions
- Pre/post surgical cognitive assessment
The distinction matters: Neuropsychological testing codes generally reimburse at higher rates and may have different authorization requirements.
Detailed Code Descriptions
Evaluation Services Codes
These codes cover the clinical work: test selection, interpretation, integration, and report writing.
96130 - Psychological Testing Evaluation Services, First Hour
Description: Psychological testing evaluation services by physician or qualified health care professional, including integration of patient data, interpretation of standardized test results and clinical data, clinical decision making, treatment planning and report, and interactive feedback to the patient; first hour
Use when: Billing for the first hour of evaluation services for psychological (non-neuropsych) testing
What it includes:
- Review of records and referral question
- Test selection
- Interpretation of test results
- Integration with clinical data
- Clinical decision making
- Report preparation
- Interactive feedback session
Time requirement: First 60 minutes of evaluation services
2026 Medicare rate: Approximately $152 (non-facility)
96131 - Psychological Testing Evaluation Services, Additional Hour
Description: Each additional hour of psychological testing evaluation services
Use when: Evaluation services exceed 60 minutes
Time requirement: Each additional 60 minutes (use for 31+ additional minutes)
2026 Medicare rate: Approximately $118 per hour
96132 - Neuropsychological Testing Evaluation Services, First Hour
Description: Same as 96130 but for neuropsychological testing
Use when: First hour of evaluation services for neuropsychological assessment
2026 Medicare rate: Approximately $163 (non-facility)
96133 - Neuropsychological Testing Evaluation Services, Additional Hour
Description: Each additional hour of neuropsychological testing evaluation services
2026 Medicare rate: Approximately $126 per hour
Administration and Scoring Codes
These codes cover test administration time and scoring.
96136 - Psychological or Neuropsychological Test Administration by Physician
Description: Psychological or neuropsychological test administration and scoring by physician or other qualified health care professional, two or more tests, any method; first 30 minutes
Use when: Psychologist directly administers and scores tests (first 30 minutes)
What counts as administration time:
- Face-to-face test administration
- Standardized instructions
- Timing and recording responses
- Scoring
What does NOT count:
- Test selection (evaluation services)
- Interpretation (evaluation services)
- Report writing (evaluation services)
- Clerical scoring by technician
2026 Medicare rate: Approximately $62
96137 - Test Administration by Physician, Additional 30 Minutes
Description: Each additional 30 minutes of administration by physician
Use when: Physician-administered testing exceeds 30 minutes
2026 Medicare rate: Approximately $59 per 30 minutes
96138 - Psychological or Neuropsychological Test Administration by Technician
Description: Psychological or neuropsychological test administration and scoring by technician, two or more tests, any method; first 30 minutes
Use when: Qualified technician administers tests under psychologist supervision (first 30 minutes)
Supervision requirements:
- Technician must be trained and competent
- Psychologist maintains responsibility
- Supervision must meet state and payer requirements
- Document supervisory relationship
2026 Medicare rate: Approximately $34
96139 - Test Administration by Technician, Additional 30 Minutes
Description: Each additional 30 minutes of technician administration
2026 Medicare rate: Approximately $34 per 30 minutes
Automated Testing Code
96146 - Psychological or neuropsychological test administration, with single automated, standardized instrument
Use when: Using computer-administered tests that require minimal clinician involvement
Examples: Some computerized continuous performance tests, automated screening tools
Note: Cannot be billed with 96136-96139 for same service
Billing Scenarios and Examples
Scenario 1: Basic Psychological Evaluation
Referral: Assess for depression and anxiety; rule out ADHD
Testing battery:
- Clinical interview (not separately billable—part of evaluation)
- MMPI-2: 90 minutes administration
- Beck Depression Inventory: 10 minutes
- Beck Anxiety Inventory: 10 minutes
- Conners Adult ADHD Rating Scale: 15 minutes
- WAIS-IV (selected subtests): 60 minutes
Time breakdown:
- Test administration (by psychologist): 185 minutes = 3 hours 5 minutes
- Evaluation services: 3 hours (review, interpretation, report, feedback)
Billing:
- 96130 x 1 (first hour evaluation)
- 96131 x 2 (additional 2 hours evaluation)
- 96136 x 1 (first 30 min administration)
- 96137 x 5 (additional 150 min = 5 units)
Scenario 2: Neuropsychological Evaluation with Technician
Referral: Assess cognitive functioning post-stroke
Testing battery:
- Administered by technician (6 hours): Memory tests, attention tests, processing speed, executive function, language, motor
- Psychologist evaluation services (5 hours): Review, interpretation, integration, report, feedback
Billing:
- 96132 x 1 (first hour neuro evaluation)
- 96133 x 4 (additional 4 hours evaluation)
- 96138 x 1 (first 30 min tech administration)
- 96139 x 11 (additional 330 min = 11 units)
Scenario 3: Brief Testing Added to Therapy
Context: Client in ongoing therapy; therapist administers PHQ-9, GAD-7, and an achievement screen
Important: Brief, routine outcome measures administered as part of therapy are generally not separately billable. Standardized psychological tests administered for diagnostic purposes may be billable.
If billable (substantial testing for diagnostic purpose):
- 96136 x 1 (if 30+ min of standardized testing)
If not billable:
- Routine outcome monitoring is part of therapy services
Documentation Requirements
Pre-Authorization Documentation
Most payers require authorization before psychological testing. Your request should include:
Required elements:
- Referral question and source
- Clinical indication/diagnosis
- Why testing is medically necessary
- Proposed test battery with rationale
- Estimated hours (evaluation + administration)
- Provider credentials
- Anticipated diagnoses/questions to be answered
Sample authorization request language:
"Patient is a 45-year-old male referred for neuropsychological evaluation to assess cognitive functioning and differential diagnosis of cognitive decline vs. depression. Patient presents with 6-month history of memory complaints, word-finding difficulties, and executive dysfunction impacting occupational functioning. Medical workup has been unrevealing. Testing is medically necessary to: (1) characterize cognitive profile, (2) establish baseline for monitoring, (3) inform treatment planning. Requested: 4 hours evaluation services (96132 x 1, 96133 x 3), 5 hours technician administration (96138 x 1, 96139 x 9)."
Report Documentation Requirements
Your testing report must support the services billed.
Report should include:
Background/Referral:
- Referral source and question
- Relevant history
- Previous testing
- Current symptoms
Behavioral observations:
- Engagement and effort
- Observable behaviors during testing
- Validity considerations
Test results:
- Tests administered (full names)
- Scores with normative comparison
- Interpretation of each test
- Pattern analysis
Integration and Summary:
- Synthesis of findings
- Diagnostic conclusions
- Answered referral questions
Recommendations:
- Treatment recommendations
- Accommodations if applicable
- Follow-up testing if indicated
Time documentation:
- Total evaluation services time
- Total administration time
- Breakdown by who administered
Time Documentation
Accurate time tracking is essential. Document:
- Date(s) of service
- Start and stop times (or total time) for each component
- Who performed each service (psychologist vs. technician)
- Specific tests administered with time per test
Sample time log:
| Service | Date | Provider | Start | End | Minutes |
|---|---|---|---|---|---|
| WAIS-IV administration | 1/15 | Technician | 9:00 | 11:30 | 150 |
| WMS-IV administration | 1/15 | Technician | 12:00 | 2:00 | 120 |
| Record review | 1/16 | Psychologist | - | - | 45 |
| Test interpretation | 1/16 | Psychologist | - | - | 90 |
| Report writing | 1/17 | Psychologist | - | - | 120 |
| Feedback session | 1/20 | Psychologist | 2:00 | 3:00 | 60 |
Prior Authorization Strategies
When Authorization Is Required
Almost always required for:
- Neuropsychological testing batteries
- Comprehensive psychological evaluations
- Testing exceeding 2-3 hours
May not require authorization:
- Brief screening measures
- Single-test administrations
- Some Medicare plans
Getting Authorization Approved
Before requesting:
- Verify benefits and authorization requirements
- Know payer's approved hour limits
- Understand which providers/credentials are covered
- Have clinical documentation ready
In your request:
- Be specific about clinical necessity
- Connect testing to treatment planning
- Explain why each test is needed
- Justify the time requested
- Include credentials of all providers
Common denial reasons and responses:
| Denial Reason | Response Strategy |
|---|---|
| "Not medically necessary" | Provide specific clinical indications; explain how results will change treatment |
| "Exceeds approved hours" | Justify each test; explain complexity of case |
| "Diagnosis doesn't support testing" | Clarify that testing is to determine diagnosis |
| "Can use briefer assessment" | Explain why comprehensive battery is needed |
For comprehensive authorization guidance, see our prior authorization guide.
Peer-to-Peer Reviews
When authorization is denied:
- Request peer-to-peer review immediately
- Prepare your clinical rationale
- Have test battery and justification ready
- Know the specific criteria the payer uses
- Be professional but assertive
- Document the conversation
Payer-Specific Considerations
Medicare
Coverage:
- Covers psychological and neuropsychological testing when medically necessary
- Must be performed by qualified provider (psychologist, in most cases)
- No specific hour limits, but must be reasonable
Documentation:
- Clear medical necessity
- Comprehensive report
- Time documentation
- Physician order/referral recommended
Technician billing:
- Technician must meet "auxiliary personnel" requirements
- Direct supervision required
- Psychologist must be on-site
Medicare Advantage: Check specific plan requirements; may have different rules
Medicaid
Varies significantly by state:
- Some states cover psychological testing extensively
- Others have strict limitations
- Often requires prior authorization
- May have specific code requirements
Check your state for:
- Covered codes
- Hour/session limits
- Provider requirements
- Authorization process
Commercial Insurance
Common patterns:
- Most require prior authorization
- Many limit testing hours (often 6-10 hours total)
- May require in-network provider
- Often require specific diagnosis codes
- May distinguish psychological from neuropsych benefits
Best practices:
- Verify benefits before testing
- Get authorization with specific hours approved
- Document time carefully
- Bill promptly after service completion
Common Billing Mistakes
Mistake 1: Conflating Evaluation and Administration Time
Wrong: Billing all testing time as administration
Right: Separate evaluation services (interpretation, report) from administration (face-to-face testing)
Mistake 2: Billing Without Two Tests
Wrong: Billing 96136 for single test administration
Right: Codes 96136-96139 require "two or more tests." Single test administration may use 96146 or may not be separately billable.
Mistake 3: Under-Billing Evaluation Services
Wrong: Only billing administration; treating report writing as "overhead"
Right: Report writing, interpretation, and integration are billable evaluation services (96130-96133)
Mistake 4: Improper Technician Supervision
Wrong: Technician administers tests while psychologist is off-site
Right: Ensure supervision meets Medicare and payer requirements (often requires on-site presence)
Mistake 5: Missing Authorization
Wrong: Conducting testing without prior authorization
Right: Most payers require authorization; verify before testing to avoid denial
Mistake 6: Insufficient Documentation
Wrong: Brief report that doesn't justify time billed
Right: Comprehensive report with all required elements, time documentation, and clear medical necessity
For more on avoiding billing errors, see our common billing mistakes guide.
Special Situations
Integrated Testing in Therapy
When testing is integrated with ongoing therapy:
- Brief outcome measures (PHQ-9, GAD-7) are generally not separately billable
- Diagnostic testing for treatment planning may be billable
- Document clear distinction between therapy and testing services
- Cannot double-bill time (therapy OR testing, not both for same time)
Testing Across Multiple Dates
Complex evaluations often span multiple sessions:
- Bill services on the date performed
- Evaluation services may be billed on date of interpretation/report completion
- Document dates clearly in report
- Some payers require testing completed within specific timeframe
School/Educational Testing
Insurance coverage for educational testing is limited:
- Most medical insurance doesn't cover testing for school placement
- Testing for medical diagnosis (ADHD, learning disability affecting health) may be covered
- IEP-related testing is typically school district responsibility
If billing insurance:
- Focus on medical/diagnostic purpose
- Use medical diagnosis codes
- Document how results inform treatment
- Avoid "educational" language in documentation
Forensic Testing
Generally not covered by health insurance:
- Testing for legal purposes is not medical necessity
- Bill patient/attorney directly
- Different documentation standards
- Higher liability considerations
Re-Testing
When repeat testing is needed:
- Document why re-testing is medically necessary
- Typical intervals vary by test and purpose
- Some payers have minimum time between evaluations
- May require separate authorization
Frequently Asked Questions
How many hours of testing will insurance authorize?
Varies widely. Typical ranges: 4-6 hours for psychological testing, 6-12 hours for neuropsychological testing. Always verify specific benefits and request what's clinically needed with justification.
Can I bill for clinical interview time?
Clinical interview for diagnostic purposes is typically included in evaluation services (96130-96133), not billed separately. The interview informs test selection and interpretation.
What qualifies as a "technician" for 96138-96139?
Requirements vary by payer and state. Generally: trained individual working under psychologist supervision who is competent to administer specific tests. Cannot be clerical staff simply running automated tests.
Can I bill testing codes on the same day as therapy codes?
Potentially, if distinct services are provided. Testing and therapy must be separate, documented services. Some payers may have restrictions. Time cannot overlap.
How do I handle testing that identifies a different diagnosis than expected?
Document your findings honestly. Testing often reveals unexpected information—that's its purpose. Bill based on what was done, not what was found. Include the diagnostic conclusions in your report.
What if the patient no-shows for the feedback session?
You've still provided evaluation services (interpretation, report writing). Bill for completed services. Document the no-show. Attempt to reschedule feedback. Consider partial evaluation codes if significant services incomplete.
Can I bill for test scoring time?
Scoring is included in administration codes (96136-96139). It's not separately billable. However, interpretation of scores is part of evaluation services (96130-96133).
How detailed must my time documentation be?
Detailed enough to support your billing if audited. Best practice: log time by activity (administration, interpretation, report writing, feedback) with dates and duration.
Need help managing psychological testing billing? Ease Health's platform supports testing authorization tracking, time documentation, and complex billing scenarios. Schedule a demo to see how we can streamline your testing practice.
Next steps
- Review the key takeaways and adapt them to your practice workflow.
- Use the details section as a checklist when you implement or troubleshoot.
- Share this with your billing or admin team to align on process and terminology.
