Quick reference
- When to use
- Use F32.9 when the client meets criteria for Major Depressive Disorder, Single Episode, 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 F32.9 represents
Used when depression meets MDD criteria but severity hasn't been fully assessed, often in initial evaluations or emergency settings.
Key diagnostic criteria
Meets general MDD criteria but severity level is unspecified. Should be updated to a severity-specific code after thorough assessment.
Documentation essentials
Document symptoms and plan for severity assessment. This should be a temporary code.
Differential diagnosis
Same as other MDD codes. Complete assessment should follow.
Treatment planning
Initial stabilization while completing assessment. Safety planning as needed.
Insurance & billing
Acceptable for initial visits. Update to severity-specific code promptly.
Updates & changes
No significant changes expected.
Documentation pitfalls
Don't leave as long-term diagnosis. Update severity within a few sessions.
References
- American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.).

