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ICD-10-CM Code F43.21
Adjustment disorder with depressed mood

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
Mental Health
Mental Health Code
Indicates that the ICD code is referenced in DSM-5 (Diagnostic and Statistical Manual of Mental Disorders, Version 5)
| ICD-10 from 2011 - 2016

F43.21 is a billable ICD code used to specify a diagnosis of adjustment disorder with depressed mood. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code F432 is used to code Adjustment disorder

An adjustment disorder (AD) (sometimes called exogenous, reactive, or situational depression) occurs when an individual is unable to adjust to or cope with a particular stress or a major life event. Since people with this disorder normally have symptoms that depressed people do, such as general loss of interest, feelings of hopelessness and crying, this disorder is sometimes known as situational depression. Unlike major depression the disorder is caused by an outside stressor and generally resolves once the individual is able to adapt to the situation. One hypothesis for adjustment disorder is that it may represent a sub-threshold clinical syndrome.

Specialty: Psychiatry
MeSH Code: D000275
ICD 9 Code: 309
Source: Wikipedia

MS-DRG Mapping

  • DRG Group #881 - Depressive neuroses.

ICD-10-CM Alphabetical Index References for 'F43.21 - Adjustment disorder with depressed mood'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code F43.21. Click on any term below to browse the alphabetical index.


Adjustment disorder with depressed mood (approximate match)
Prolonged depressive reaction (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code F43.21 and a single ICD9 code, 309.1 is an approximate match for comparison and conversion purposes.

Parent Code: F43.2 - Adjustment disorders

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/F4321