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2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Mental Disorders 290-319 > Neurotic Disorders, Personality Disorders, And Other Nonpsychotic Mental Disorders 300-316 >

2008 ICD-9-CM Diagnosis 311

Depressive disorder not elsewhere classified

  • A mental state of depressed mood characterised by feelings of sadness, despair and discouragement. (On-line Medical Dictionary)
  • An affective disorder manifested by either a dysphoric mood or loss of interest or pleasure in usual activities. The mood disturbance is prominent and relatively persistent.
  • Depressive states usually of moderate intensity in contrast with major depression present in neurotic and psychotic disorders.
  • 311 is a specific code that can be used to specify a diagnosis
  • 311 contains 3 index entries

311 also known as:

  • Depressive disorder NOS
  • Depressive state NOS
  • Depression NOS

311 excludes:

  • acute reaction to major stress with depressive symptoms (308.0)
  • affective personality disorder (301.10-301.13)
  • affective psychoses (296.0-296.9)
  • brief depressive reaction (309.0)
  • depressive states associated with stressful events (309.0-309.1)
  • disturbance of emotions specific to childhood and adolescence, with misery and unhappiness (313.1)
  • mixed adjustment reaction with depressive symptoms (309.4)
  • neurotic depression (300.4)
  • prolonged depressive adjustment reaction (309.1)
  • psychogenic depressive psychosis (298.0)


Index entries containing 311:

Depression 311Disorder - see also Disease
  • depressive NEC 311
State