ICD-10-CM 2027
ICD-10 code for emotional persistent disorder
Persistent mood [affective] disorder, unspecified
From the official ICD-10-CM alphabetic index entry “Disorder (of) › emotional (persistent)”. Page updated September 29, 2026.
About coding emotional persistent disorder
The ICD-10-CM code for emotional persistent disorder is F34.9 (Persistent mood [affective] disorder, unspecified). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on F34.9.
Within F34, choose F34.9 (Persistent mood [affective] disorder, unspecified) only when documentation doesn't support a more specific option: Cyclothymic disorder (F34.0), Dysthymic disorder (F34.1) and other persistent mood [affective] disorders (F34.8).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 885 (Psychoses, relative weight 1.3901), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific emotional persistent disorder codes (official index)
Common questions about emotional persistent disorder ICD-10 codes
What is the ICD-10 code for emotional persistent disorder?
- F34.9 — Persistent mood [affective] disorder, unspecified. More specific codes apply when the documentation supports them: F93.9, F93.8.
Is F34.9 billable?
- Yes. F34.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F34.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F34.9 as a principal diagnosis.
Is F34.9 a CC or MCC?
- F34.9 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.