ICD-10-CM Code For Unspecified Mood Affective Disorder: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group F39 includes unspecified mood or affective disorders that are used when mood disturbance is present but does not meet criteria for a specific depressive, bipolar, or related mood disorder. These ICD-10-CM diagnosis codes are used to document clinical scenarios where mood symptoms are evident but lack sufficient detail for a more specific code, capturing clinical complexity and diagnostic uncertainty. Accurate coding within the ICD-10-CM F39 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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ICD-10-CM F39: Unspecified Mood [Affective] Disorder Overview

The ICD-10-CM F39 group represents unspecified mood or affective disorders that do not meet criteria for a more specific mood disorder diagnosis and primarily affect mood regulation and emotional functioning. These conditions involve the psychiatric and nervous systems and can include depressive or manic symptoms that are insufficiently specified. Accurate coding matters for reimbursement because clear documentation of diagnostic uncertainty or nonspecific presentations affects claim adjudication and payment.

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ICD-10-CM Code For Unspecified Mood Affective Disorder: Group Overview

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ICD-10-CM F39: Unspecified Mood [Affective] Disorder Overview

When to Use

Use a code from this group when the patient presents with mood symptoms that are documented but lack the specificity or diagnostic criteria required for a more precise mood disorder code. These codes are appropriate when clinicians record uncertain or indeterminate mood disorder diagnoses in the medical record without further specification.

ICD-10-CM Codes

1 rows

ICD-10-CM Code	Description
F39	Unspecified mood [affective] disorder

DRG Codes

1 rows

DRG Code	Description
885	Psychoses

Typical Clinical Scenarios

An adult patient in primary care reports several months of fluctuating depressive symptoms with periods of low mood, diminished interest, and sleep disturbance that do not meet full criteria for major depressive disorder or a specific bipolar disorder; there is insufficient documentation to classify the affective disturbance as depressive or bipolar subtype, so an unspecified mood disorder diagnosis is assigned. Typical codes: F39.
An elderly patient presenting to the emergency department with new-onset agitation, tearfulness, and mood lability after a medical hospitalization; the acute affective symptoms cannot be attributed definitively to major depression, bipolar disorder, or medication-induced mood disturbance based on available information, prompting assignment of an unspecified mood disorder code for immediate management and follow-up assessment. Typical codes: F39.
A middle-aged patient in a psychiatric outpatient clinic with a chronic history of episodic mood instability and functional impairment, where prior records are incomplete and current evaluation cannot reliably subtype the mood condition as unipolar or bipolar; clinicians document an unspecified mood disorder to capture the affective diagnosis while awaiting additional longitudinal data. Typical codes: F39.

Related Codes

F30-MANIC-EPISODE

ICD-10-CM Code For Manic Episode: Group Overview

F31-BIPOLAR-DISORDER

ICD-10-CM Code For Bipolar Disorder: Group Overview

F32-DEPRESSIVE-EPISODE

ICD-10-CM Code For Depressive Episode: Group Overview

F33-MAJOR-DEPRESSIVE-DISORDER-RECURRENT

ICD-10-CM Code For Major Depressive Disorder Recurrent: Group Overview

F34-PERSISTENT-MOOD-AFFECTIVE-DISORDERS

ICD-10-CM Code For Persistent Mood Affective Disorders: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

1 rows

ICD-10-CM Code	Description
F39	Unspecified mood [affective] disorder

DRG Codes

1 rows

DRG Code	Description
885	Psychoses

Typical Clinical Scenarios

An adult patient in primary care reports several months of fluctuating depressive symptoms with periods of low mood, diminished interest, and sleep disturbance that do not meet full criteria for major depressive disorder or a specific bipolar disorder; there is insufficient documentation to classify the affective disturbance as depressive or bipolar subtype, so an unspecified mood disorder diagnosis is assigned. Typical codes: F39.
An elderly patient presenting to the emergency department with new-onset agitation, tearfulness, and mood lability after a medical hospitalization; the acute affective symptoms cannot be attributed definitively to major depression, bipolar disorder, or medication-induced mood disturbance based on available information, prompting assignment of an unspecified mood disorder code for immediate management and follow-up assessment. Typical codes: F39.
A middle-aged patient in a psychiatric outpatient clinic with a chronic history of episodic mood instability and functional impairment, where prior records are incomplete and current evaluation cannot reliably subtype the mood condition as unipolar or bipolar; clinicians document an unspecified mood disorder to capture the affective diagnosis while awaiting additional longitudinal data. Typical codes: F39.

Related Codes

F30-MANIC-EPISODE

ICD-10-CM Code For Manic Episode: Group Overview

F31-BIPOLAR-DISORDER

ICD-10-CM Code For Bipolar Disorder: Group Overview

F32-DEPRESSIVE-EPISODE

ICD-10-CM Code For Depressive Episode: Group Overview

F33-MAJOR-DEPRESSIVE-DISORDER-RECURRENT

ICD-10-CM Code For Major Depressive Disorder Recurrent: Group Overview

F34-PERSISTENT-MOOD-AFFECTIVE-DISORDERS

ICD-10-CM Code For Persistent Mood Affective Disorders: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Unspecified Mood Affective Disorder: Group Overview

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ICD-10-CM F39: Unspecified Mood [Affective] Disorder Overview

ICD-10-CM Code For Unspecified Mood Affective Disorder: Group Overview

Sign up for ICD-10-CM Code For Unspecified Mood Affective Disorder: Group Overview policy alerts

ICD-10-CM F39: Unspecified Mood [Affective] Disorder Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

When should a coder use `F39` for documentation?

How does using `F39` affect claim adjudication and reimbursement?

What clinical scenarios are captured by the ICD-10-CM F39 group?

Which body systems are involved with conditions in the F39 group?

Are there DRGs related to the `F39` diagnosis group?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

When should a coder use `F39` for documentation?

How does using `F39` affect claim adjudication and reimbursement?

What clinical scenarios are captured by the ICD-10-CM F39 group?

Which body systems are involved with conditions in the F39 group?

Are there DRGs related to the `F39` diagnosis group?

References