ICD-9 Diagnosis Code 780.79

Malaise and fatigue NEC

Diagnosis Code 780.79

ICD-9: 780.79
Short Description: Malaise and fatigue NEC
Long Description: Other malaise and fatigue
This is the 2014 version of the ICD-9-CM diagnosis code 780.79

Code Classification
  • Symptoms, signs, and ill-defined conditions (780–799)
    • Symptoms (780-789)
      • 780 General symptoms

Information for Medical Professionals

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Accommodative fatigue
  • Asthenia
  • Attacks of weakness
  • Complaining of
  • Complaining of debility and malaise
  • Complaining of overwork
  • Exhausted on least exertion
  • Exhaustion
  • Exhaustion - physiological
  • Extreme exhaustion
  • Fatigability
  • Fatigue
  • Fatigue - symptom
  • Fatigue associated with acquired immunodeficiency syndrome
  • Fatigue due to chemotherapy or radiation therapy
  • Feeling tired
  • Frailty
  • General health deterioration
  • Generalized neuromuscular exhaustion syndrome
  • Generally unwell
  • Heavy feeling
  • Heavy legs
  • Impaired exercise tolerance
  • Lack of energy
  • Lack of stamina
  • Lethargy
  • Malaise
  • Malaise and fatigue
  • Malaise associated with acquired immunodeficiency syndrome
  • Postviral fatigue syndrome
  • Pseudoparalysis due to generalized arthritis
  • Quickly exhausted
  • Senile exhaustion
  • Tired
  • Tired all the time
  • Tired on least exertion
  • Tiredness symptom
  • Tires quickly
  • Tiring with pain
  • Tropical anhidrotic asthenia
  • Weakness as a late effect of cerebrovascular accident
  • Weakness of hand
  • Weakness of toe

Index of Diseases and Injuries
References found for the code 780.79 in the Index of Diseases and Injuries:

Information for Patients


Also called: Tiredness, Weariness

Everyone feels tired now and then. Sometimes you may just want to stay in bed. But, after a good night's sleep, most people feel refreshed and ready to face a new day. If you continue to feel tired for weeks, it's time to see your doctor. He or she may be able to help you find out what's causing your fatigue and recommend ways to relieve it.

Fatigue itself is not a disease. Medical problems, treatments, and personal habits can add to fatigue. These include

  • Taking certain medicines, such as antidepressants, antihistamines, and medicines for nausea and pain
  • Having medical treatments, like chemotherapy and radiation
  • Recovering from major surgery
  • Anxiety, stress, or depression
  • Staying up too late
  • Drinking too much alcohol or too many caffeinated drinks
  • Pregnancy

One disorder that causes extreme fatigue is chronic fatigue syndrome (CFS). 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.

NIH: National Institute on Aging

  • Fatigue

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