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Table 1 Selected ICD-9-CM codes for depression and description

From: The relationship between vitamin D status and depression in a tactical athlete population

ICD-9-CM Code

Description

296.22

Major depressive affective disorder single episode

296.3

Major depressive affective disorder recurrent episode unspecified degree

296.31

Major depressive affective disorder recurrent

296.32

Major depressive affective disorder recurrent episode moderate degree

296.33

Major depressive affective disorder recurrent episode severe degree without psychotic behavior

296.9

Unspecified episodic mood disorder

311

Depressive disorder not elsewhere classified