R53.83Other fatigue

R53.83 is the ICD-10-CM diagnosis code for other fatigue. It belongs to category R53 (malaise and fatigue), block R50-R69 (general symptoms and signs) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within R53.8, choose R53.83 (Other fatigue) only when documentation doesn't support a more specific option: other malaise (R53.81) and chronic fatigue, unspecified (R53.82).

The conditions in its Excludes2 note aren't part of R53.83, but may be coded alongside it if the patient has both: exhaustion and fatigue due to depressive episode (F32.-).

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 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), 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 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 780.79 (other malaise and fatigue).