2023 ICD-10-CM Diagnosis Code G93.3

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Postviral and related fatigue syndromes

    2016 2017 2018 2019 2020 2021 2022 2023 - Converted to Parent Code Non-Billable/Non-Specific Code
  • G93.3 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • ICD-10-CM G93.3 is a new 2023 ICD-10-CM code that became effective on October 1, 2022.
  • This is the American ICD-10-CM version of G93.3 - other international versions of ICD-10 G93.3 may differ.
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code, if applicable, for post COVID-19 condition, unspecified (
    ICD-10-CM Diagnosis Code U09.9

    Post COVID-19 condition, unspecified

      2022 - New Code 2023 Billable/Specific Code
    Code First
    • the specific condition related to COVID-19 if known, such as:
    • chronic respiratory failure (J96.1-)
    • loss of smell (R43.8)
    • loss of taste (R43.8)
    • multisystem inflammatory syndrome (M35.81)
    • pulmonary embolism (I26.-)
    • pulmonary fibrosis (J84.10)
    Note
    • This code enables establishment of a link with COVID-19.
    • This code is not to be used in cases that are still presenting with active COVID-19. However, an exception is made in cases of re-infection with COVID-19, occurring with a condition related to prior COVID-19.
    • Post-acute sequela of COVID-19
    U09.9
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G93.3. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • chronic fatigue syndrome NOS (
    ICD-10-CM Diagnosis Code R53.82

    Chronic fatigue, unspecified

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Type 1 Excludes
    • chronic fatigue syndrome (G93.32)
    • myalgic encephalomyelitis (G93.32)
    • post infection and related fatigue syndromes (G93.39)
    • postviral fatigue syndrome (G93.31)
    R53.82
    )
  • neurasthenia (
    ICD-10-CM Diagnosis Code F48.8

    Other specified nonpsychotic mental disorders

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Dhat syndrome
    • Neurasthenia
    • Occupational neurosis, including writer's cramp
    • Psychasthenia
    • Psychasthenic neurosis
    • Psychogenic syncope
    F48.8
    )
The following code(s) above G93.3 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G93.3:
  • G00-G99
    2023 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • 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)
    Diseases of the nervous system
Approximate Synonyms
  • Postviral fatigue syndrome
Clinical Information
  • A condition lasting for more than 6 months in which a person feels tired most of the time and may have trouble concentrating and carrying out daily activities. Other symptoms include sore throat, fever, muscle weakness, headache, and joint pain.
  • A syndrome characterized by persistent or recurrent fatigue, diffuse musculoskeletal pain, sleep disturbances, and subjective cognitive impairment of 6 months duration or longer. Symptoms are not caused by ongoing exertion; are not relieved by rest; and result in a substantial reduction of previous levels of occupational, educational, social, or personal activities. Minor alterations of immune, neuroendocrine, and autonomic function may be associated with this syndrome. There is also considerable overlap between this condition and fibromyalgia. (from semin neurol 1998;18(2):237-42; ann intern med 1994 dec 15;121(12): 953-9)
  • A syndrome of unknown etiology. Chronic fatigue syndrome (cfs) is a clinical diagnosis characterized by an unexplained persistent or relapsing chronic fatigue that is of at least six months' duration, is not the result of ongoing exertion, is not substantially alleviated by rest, and results in substantial reduction of previous levels of occupational, educational, social, or personal activities. Common concurrent symptoms of at least six months duration include impairment of memory or concentration, diffuse pain, sore throat, tender lymph nodes, headaches of a new type, pattern, or severity, and nonrestorative sleep. The etiology of cfs may be viral or immunologic. Neurasthenia and fibromyalgia may represent related disorders. Also known as myalgic encephalomyelitis.
  • Chronic fatigue syndrome (cfs) is a disorder that causes extreme fatigue. This fatigue is not the kind of tired feeling that goes away after you rest. Instead, it lasts a long time and limits your ability to do ordinary daily activities. Symptoms of cfs include fatigue for 6 months or more and experiencing other problems such as muscle pain, memory problems, headaches, pain in multiple joints, sleep problems, sore throat and tender lymph nodes. Since other illnesses can cause similar symptoms, cfs is hard to diagnose.no one knows what causes cfs. It is most common in women in their 40s and 50s, but anyone can have it. It can last for years. There is no cure for cfs, so the goal of treatment is to improve symptoms. Medicines may treat pain, sleep disorders and other problems. Centers for Disease Control and Prevention.
  • Distinctive syndrome characterized by chronic fatigue, mild fever, lymphadenopathy, headache, myalgia, arthralgia, depression, and memory loss; candidate etiologic agents include epstein-barr and other herpesviruses.
  • Syndrome thought to be caused by a viral organism resulting in chronic fatigue, fever, pain, sore throat, and, in some cases, depression.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): Deleted code
  • 2023 (effective 10/1/2022): New code
ICD-10-CM Codes Adjacent To G93.3
G92.02 …… grade 2
G92.03 …… grade 3
G92.04 …… grade 4
G92.05 …… grade 5
G92.8 Other toxic encephalopathy
G92.9 Unspecified toxic encephalopathy
G93 Other disorders of brain
G93.0 Cerebral cysts
G93.1 Anoxic brain damage, not elsewhere classified
G93.2 Benign intracranial hypertension
G93.3 Postviral and related fatigue syndromes
G93.31 Postviral fatigue syndrome
G93.32 Myalgic encephalomyelitis/chronic fatigue syndrome
G93.39 Other post infection and related fatigue syndromes
G93.4 Other and unspecified encephalopathy
G93.40 Encephalopathy, unspecified
G93.41 Metabolic encephalopathy
G93.49 Other encephalopathy
G93.5 Compression of brain
G93.6 Cerebral edema
G93.7 Reye's syndrome

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.