G93.3 – Postviral and related fatigue syndromes
ICD-10-CM 2027 diagnosis code · Other disorders of the nervous system
ICD-10-CM code
G93.3
- Code
G93.3(claims format:G933)- Description
- Postviral and related fatigue syndromes
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 6. Diseases of the nervous system (G00-G99)
- Block
- G89-G99 Other disorders of the nervous system
- Parent codes
- G93
Billable codes under G93.3
G93.3 is a header code and cannot be used on claims. Choose the most specific code:
Notes for G93.3
Use additional code:
- code, if applicable, for post COVID-19 condition, unspecified (U09.9)
Related codes in G93
- G93.0 – Cerebral cystsBillable
- G93.1 – Anoxic brain damage, not elsewhere classifiedBillable
- G93.2 – Benign intracranial hypertensionBillable
- G93.4 – Other and unspecified encephalopathyHeader
- G93.5 – Compression of brainBillable
- G93.6 – Cerebral edemaBillable
- G93.7 – Reye's syndromeBillable
- G93.8 – Other specified disorders of brainHeader
- G93.9 – Disorder of brain, unspecifiedBillable
Frequently asked questions
What is ICD-10 code G93.3?
G93.3 is the ICD-10-CM code for postviral and related fatigue syndromes, in the block G89-G99 (Other disorders of the nervous system).
Is G93.3 a billable code?
No. G93.3 is a header code with more specific child codes; report one of the billable codes listed above.
What category does G93.3 belong to?
It belongs to category G93 – Other disorders of brain.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.