CPT 90834 + ICD-10 F32.9: Major depressive disorder, single episode, unspecified
Psychotherapy, 45 minutes billed with Major depressive disorder, single episode, unspecified — documentation requirements, denial reasons, modifiers, and reimbursement context.
CPT Code
90834
Psychotherapy, 45 minutes
ICD-10 Code
F32.9
Major depressive disorder, single episode, unspecified
Compatibility Notes
Commonly used for early-phase or mid-treatment MDD sessions when the clinical encounter falls within the 38–52 minute window. Appropriate during diagnostic clarification of a first MDD episode before severity is specified. Most payers cover this without prior authorization.
Documentation Required
- ✓Session start and stop times confirming 38–52 minutes
- ✓Active MDD single-episode diagnosis with current symptom summary
- ✓PHQ-9 or equivalent
- ✓Risk assessment for suicidal ideation
- ✓Therapeutic interventions documented
Common Denial Reasons
- ✗Session time below 38 minutes — use 90832
- ✗Prior MDD episodes documented but code reflects single episode — use F33.x for recurrent course
- ✗Notes lack individualized content
Applicable Modifiers
Reimbursement Notes
OON UCR $100–$165. Commercial plans typically reimburse at 50–70% of UCR. Upgrade to 90837 when sessions routinely run 53+ minutes.
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