Mental, Behavioral and Neurodevelopmental Disorders
ICD-10 Code: F32.9
Major Depressive Disorder, Single Episode, Unspecified
First episode of major depression without severity specification.
Clinical Information
MDD affects 8% of US adults. Single episode code used for first occurrence. Symptoms: depressed mood, anhedonia, sleep/appetite changes, fatigue, worthlessness, concentration problems.
Coding Guidelines
- 1Use for first episode of depression
- 2For recurrent, use F33.x
- 3Specify severity when documented (mild F32.0, moderate F32.1, severe F32.2)
Common Uses
- New diagnosis of depression
- First episode MDD on antidepressant
Related ICD-10 Codes
F33.9Major depressive disorder, recurrent
F32.1MDD single episode, moderate
Documentation Requirements
- Document 'major depression' or 'MDD'
- Note if first episode vs. recurrent
- Severity if available
Real-World Coding Examples
28-year-old with first episode depression, started escitalopram. Diagnosis: MDD single episode (F32.9)
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