ICD-9-CM 311
CMS Source: final ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.FacebookXLinkedInPrint

311 is a legacy ICD-9-CM diagnosis code for depressive disorder, not elsewhere classified. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is F32.9 (Major depressive disorder, single episode, unspecified), flagged as an approximate match.

Code Identity

ICD-9-CM Code
311
Valid for Submission
No — Legacy Code
Code Describes
Depressive disorder, not elsewhere classified
Short Description
Depressive disorder NEC
Parent Block
311 Depressive disorder, not elsewhere classified
ICD-10-CM Replacement
F32.9 (approximate)

Convert 311 to ICD-10-CM

Based on the final CMS General Equivalence Mappings (GEMs), 311 crosswalks to the following ICD-10-CM code.

ICD-10-CM
F32.9 Major depressive disorder, single episode, unspecified
Approximate The match is approximate rather than exact.

Approximate Synonyms

Alternate clinical terms that were indexed to 311:

  • Chronic depression
  • Complaining of feeling depressed
  • Decline in Edinburgh postnatal depression scale score at 8 months
  • Depression requiring intervention
  • Depression worse in morning
  • Depression worse later in day
  • Depressive disorder
  • Depressive disorder in mother complicating childbirth
  • Depressive disorder in remission
  • Depressive position relationship
  • Depressive preoccupation
  • Feeling empty
  • Feeling lost
  • Feeling of loss of feeling
  • Feeling unloved
  • Feeling unwanted
  • Feels everything is futile
  • Involutional depression
  • Major depression, melancholic type
  • Masked depression
  • Mild depression
  • Minor depressive disorder
  • Moderate depression
  • On examination - depressed
  • Postoperative depression
  • Post-schizophrenic depression
  • Postviral depression
  • Preoccupation with disaster
  • Preoccupation with ruin
  • Severe depression
  • Stuporous depression
  • Symptoms of depression

Index of Diseases References

Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 311. Tap the icons for the official index conventions.

  • Carcinoma M8010 3 SEE ALSO Neoplasm by site malignant
    • hypernephroid M8311 3
  • Disorder SEE ALSO Disease
    • depressive NEC 311
      • major SEE ALSO Psychosis affective 296.2
  • Odontoameloblastoma M9311 0 213.1
  • State
    • depressive NEC 311
  • Tumor M8000 1 SEE ALSO Neoplasm by site unspecified nature
    • hypernephroid M8311 1 SEE ALSO Neoplasm by site uncertain behavior

Information for Patients

Depression

Depression is a serious medical illness. It's more than just a feeling of being sad or "blue" for a few days. If you are one of the more than 19 million teens and adults in the United States who have depression, the feelings do not go away. They persist and interfere with your everyday life. Symptoms can include:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Questions About 311

Is 311 (depressive disorder, not elsewhere classified) still a valid code?

No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement F32.9.

What is the ICD-10 replacement for 311?

The General Equivalence Mappings crosswalk this code to ICD-10-CM F32.9 (Major depressive disorder, single episode, unspecified). The match is flagged as approximate, so confirm it against the clinical documentation before use.

What did 311 mean?

In the final ICD-9-CM release, this code described depressive disorder, not elsewhere classified. It sat in block 311 Depressive disorder, not elsewhere classified under Mental disorders (290–319).