F54Psychological and behavioral factors associated with disorders or diseases classified elsewhere

F54 is the ICD-10-CM diagnosis code for psychological and behavioral factors associated with disorders or diseases classified elsewhere. It belongs to block F50-F59 (behavioral syndromes associated with physiological disturbances and physical factors) and chapter 5 (mental, Behavioral and Neurodevelopmental disorders). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The conditions in its Excludes2 note aren't part of F54, but may be coded alongside it if the patient has both: tension-type headache (G44.2).

Code first the associated physical disorder, such as: asthma (J45.-), dermatitis (L23-L25), gastric ulcer (K25.-), mucous colitis (K58.-) and 2 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 884 (Organic Disturbances and Intellectual Disability, relative weight 1.6001), 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.

It is a manifestation code, so it describes the effect of an underlying disease and can't be the principal diagnosis. Code the underlying condition first.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 316 (Psychic factors associated with diseases classified elsewhere).