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IACCIICD-10: G93.3
ME/CFS
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome — severe fatigue, post-exertional malaise, cognitive dysfunction, and autonomic impairment.
US Prevalence
3.3M
estimated affected individuals
Annual New Cases
500.0K
new diagnoses per year
Diagnostic Delay
4 years
average time to diagnosis
Annual Cost / Patient
$36,000
national burden: $149B-$362B/year
Key Facts
Critical data points clinicians and policymakers should know
- Burden-to-NIH-funding ratio: 3,400:1 (most extreme of any U.S. disease)
- Many Long COVID patients meet ME/CFS criteria
- ~25% of patients are homebound or bedbound
- NIH funding only ~$15M/year
- Comparable economic scale to Alzheimer's ($340B/year)
Related Symptoms
12 documented symptoms across 6 body systems
4
neurological
- Brain Fog / Cognitive Dysfunction
- Headache
- Sleep Disruption
- Memory Loss
2
systemic
- Chronic Fatigue
- Post-Exertional Malaise
2
musculoskeletal
- Joint Pain / Arthralgia
- Muscle Pain / Myalgia
2
psychiatric
- Anxiety
- Depression
1
gastrointestinal
- GI Distress (Nausea, Cramping)
1
sensory
- Light Sensitivity
Symptom Overlap with Other Conditions
Conditions that share symptoms with ME/CFS, ranked by number of shared symptoms. High overlap can contribute to misdiagnosis and diagnostic delay.
Long COVID11 shared
92% of ME/CFS symptomsChronic FatigueBrain Fog / Cognitive DysfunctionJoint Pain / ArthralgiaHeadachePost-Exertional MalaiseMuscle Pain / MyalgiaSleep DisruptionGI Distress (Nausea, Cramping)AnxietyDepressionMemory Loss
Lyme Disease9 shared
75% of ME/CFS symptomsChronic FatigueBrain Fog / Cognitive DysfunctionJoint Pain / ArthralgiaHeadacheMuscle Pain / MyalgiaAnxietyDepressionMemory LossLight Sensitivity
Fibromyalgia7 shared
58% of ME/CFS symptomsChronic FatigueBrain Fog / Cognitive DysfunctionJoint Pain / ArthralgiaMuscle Pain / MyalgiaSleep DisruptionDepressionLight Sensitivity
POTS5 shared
42% of ME/CFS symptomsChronic FatigueBrain Fog / Cognitive DysfunctionHeadacheSleep DisruptionAnxiety
Economic Impact
Published economic burden data for ME/CFS
National Annual Burden
$149B-$362B
Tandfonline 2022 (2022)
Burden-to-Funding Ratio
3,400:1
NIH/Economic analysis (2022)
NIH Annual Funding
$15M
NIH Reporter (2024)
Severity at a Glance
Comparative metrics placing ME/CFS in context
Long COVID18.0M
Fibromyalgia10.0M
ME/CFS (this condition)3.3M
POTS3.0M
Lyme Disease2.0M
Alpha-gal Syndrome450.0K
Take Action
Use InvisibleSignal tools to screen, find care, or understand costs
Data sourced from CDC, Census Bureau (HPS), CMS, NIH, AHRQ, and peer-reviewed literature. Last updated August 2026.