CPT 90791 + ICD-10 F43.22: Adjustment disorder with anxiety
Psychiatric diagnostic evaluation billed with Adjustment disorder with anxiety — documentation requirements, denial reasons, modifiers, and reimbursement context.
CPT Code
90791
Psychiatric diagnostic evaluation
ICD-10 Code
F43.22
Adjustment disorder with anxiety
Common Modifiers
Compatibility Notes
Initial evaluation for a patient presenting with anxiety symptoms linked to an identifiable stressor. Appropriate when primary anxiety disorder criteria are not met at intake. Document the differential clearly in the evaluation note.
Documentation Required
- ✓Comprehensive evaluation with stressor and anxiety symptom history
- ✓Primary anxiety disorder differential documented and ruled out
- ✓GAD-7 at intake
- ✓Treatment plan and timeline expectations
Common Denial Reasons
- ✗90791 billed more than once per year by same provider
- ✗Primary anxiety disorder criteria appear to be met without documentation of differential
- ✗Stressor not documented
Applicable Modifiers
Reimbursement Notes
OON UCR $175–$350. Bill 90791 at every intake visit; this is the highest single-session reimbursement code for outpatient therapists.
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