G93.3
ICD-10Non-billable categoryPostviral and related fatigue syndromes
Official ICD-10-CM descriptor (FY2026)
Postviral and related fatigue syndromes
G93.3 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- chronic fatigue NOS (R53.82)
- neurasthenia (F48.8)
Use additional code
Report an additional code to identify the associated condition.
- code, if applicable, for post COVID-19 condition, unspecified (U09.9)
ICD-10-CM FY2026 defines 3 codes beneath G93.3. See the ICD-10-CM index for what this site publishes.
Related codes in G93
- G93.0Cerebral cysts
- G93.1Anoxic brain damage, not elsewhere classified
- G93.2Benign intracranial hypertension
- G93.4Other and unspecified encephalopathycategory
- G93.5Compression of brain
- G93.6Cerebral edema
- G93.7Reye's syndrome
- G93.8Other specified disorders of braincategory
- G93.9Disorder of brain, unspecified
Where this code sits
- Parent code
- G93
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.