ICD-10-CM F32.9
ICD-10 Code F32.9: Major depressive disorder, single episode, unspecified
F32.9 is the ICD-10-CM code for major depressive disorder, single episode, unspecified. It means the diagnosis is a single episode of major depression but the severity is not specified. It is not a general “depression” code - that is F32.A.
- Official description
- Major depressive disorder, single episode, unspecified
- Billable
- Yes
- Parent category
- F32 · Depressive episode
- DSM-5-TR name
- Major depressive disorder, single episode, unspecified
Verified against the FY2027 ICD-10-CM code set (CDC/NCHS and CMS), effective October 1, 2026 - September 30, 2027, on . Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99).
Coding notes for F32.9
- Use when severity has not been determined yet, and update to F32.0-F32.2 once it has
- Some payers question long-term use of unspecified codes, so move to a specific code when you can
- For depression that does not meet criteria for major depressive disorder, F32.A is the unspecified depression code
What to document for medical necessity
Payers look for a record that supports the diagnosis and the level of care. For depressive disorders that usually means:
- The symptoms that support the diagnosis and how long they have been present
- The current severity (mild, moderate, severe) and how you arrived at it - a scored measure such as the PHQ-9 helps
- Whether this is a first episode or a recurrence, since that decides F32 versus F33
- Functional impairment at work, school, home, or in relationships
- Risk assessment, including suicidal ideation, at intake and when it changes
- Treatment plan goals tied to the depressive symptoms you are treating
CPT codes often billed with F32.9
The ICD-10 code says why you are treating the client and the CPT code says what you did. These are the service codes most often paired with F32.9:
Free templates for this diagnosis
Related ICD-10 codes
Frequently asked questions
What is the difference between F32.9 and F32.A?
F32.9 is major depressive disorder, single episode, with severity not specified. F32.A is “Depression, unspecified”, which does not commit to major depressive disorder at all. DSM-5-TR uses F32.A for unspecified depressive disorder.
Can I keep billing F32.9?
It is a valid, billable code. Many clinicians use it at intake and switch to a severity-specific code once the assessment is complete, which also gives payers a clearer picture of medical necessity.
This page is a coding reference, not clinical, diagnostic, billing, or legal advice. The diagnosis is the treating clinician's call, and payer rules vary - always confirm against the current ICD-10-CM code set and official guidelines and your payer's policy. See the full mental health ICD-10 code list.