Major Depressive Disorder

April 20, 2021

Depression is the most common mental disorder. It carries a high cost in terms of relationship problems, family suffering and lost work productivity, according to the American Psychiatry Association. Accurately and completely documenting and coding Major Depressive Disorder (MDD) can help our members access needed resources. Below is information from the ICD-10-CM Official Guidelines for Coding and Reporting.

Coding for MDD

When coding and documenting for MDD, it’s critical to capture the episode and severity with the most accurate diagnosis codes

Documentation should include:

• Episode: single or recurrent
• Severity: mild, moderate, severe without psychotic features or severe with psychotic features
• Clinical status of the current episode: in partial or full remission

The fourth and fifth characters in the ICD-10-CM codes capture the severity and clinical status of the episode.

F32.9 MDD, single episode, unspecified, is equivalent to Depression Not Otherwise Specified (NOS), Depressive Disorder NOS and Major Depression NOS. This code should rarely be used and only when nothing else, such as the severity or episode, is known about the disorder.

Best Practices

• Include patient demographics, such as name, date of birth and date of service in all progress notes.
• Document legibly, clearly and concisely.
• Ensure a credentialed provider signs and dates all documents.
• Document each diagnosis as having been monitored, evaluated, assessed and/or treated on the date of service.
• Note complications with an appropriate treatment plan.
• Take advantage of the Annual Health Assessment (AHA) or other yearly preventative exam as an opportunity to capture conditions impacting member care.

For more details, see:

• ICD-10-CM Official Guidelines for Coding and Reporting, Chapter 5: Mental, Behavioral and Neurodevelopmental disorders (F01-F99)

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The material presented here is for informational/educational purposes only, is not intended to be medical advice or a definitive source for coding claims and is not a substitute for the independent medical judgment of a physician or other health care provider. Health care providers are encouraged to exercise their own independent medical judgment based upon their evaluation of their patients’ conditions and all available information, and to submit claims using the most appropriate code(s) based upon the medical record documentation and coding guidelines and reference materials. References to other third-party sources or organizations are not a representation, warranty or endorsement of such organization. Any questions regarding those organizations should be addressed to them directly.