Quick reference
- When to use
- Use F33.9 when the client meets criteria for Major Depressive Disorder, Recurrent, Unspecified. Confirm episode type (single vs. recurrent) and severity level before coding. Always screen for bipolar history before assigning a unipolar depression code.
- Duration
- Symptoms must be present for at least 2 weeks. For recurrent codes (F33.x), document history of prior episodes with periods of remission. Reassess severity each session using PHQ-9.
- Session codes
- Pair with CPT 90791 (intake), 90834 (45-min), or 90837 (60-min). Use 96127 for PHQ-9 screening. Add 90863 for pharmacological management with therapy. Crisis sessions: 90839 + 90840.
- Key indicators
- Depressed mood or loss of interest/pleasure (at least one required) • Sleep changes • Appetite/weight changes • Fatigue • Worthlessness or guilt • Concentration difficulty • Psychomotor changes • Suicidal ideation
What F33.9 represents
Used when recurrent depression is present but severity of the current episode hasn't been fully assessed.
Key diagnostic criteria
History of multiple MDD episodes with current episode severity unspecified.
Documentation essentials
Document prior episodes and plan for current severity assessment.
Differential diagnosis
Same considerations as other recurrent MDD codes.
Treatment planning
Stabilization while completing assessment.
Insurance & billing
Acceptable for initial evaluation. Update severity promptly.
Updates & changes
No significant changes expected.
Documentation pitfalls
Update to severity-specific code after assessment.
References
- American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.).

