G93.3

Postviral and related fatigue syndromes

FY2027Chapter 6: Diseases of the nervous system/G89–G99 Other disorders of the nervous system

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

G93.3 is a non-billable ICD-10-CM code header for postviral and related fatigue syndromes. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are G93.31 Postviral fatigue syndrome, G93.32 Myalgic encephalomyelitis/chronic fatigue syndrome and G93.39 Other post infection and related fatigue syndromes. Its coding notes include a Use additional code instruction, 2 Excludes1 entries and 8 Excludes2 entries.

Use additional code

Add the listed code as a secondary code, if known.

This code
  • code, if applicable, for post COVID-19 condition, unspecified (U09.9)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (8 notes)
Inherited from Chapter 6 Diseases of the nervous system
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

More specific codes under G93.3 3