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Chronic fatigue syndrome (CFS) requires the additional symptoms of: post-exertional malaise (significantly worsening symptoms with activity which results in a significant reduction in daily activities, which may be delayed by up to 3 days) sleep dysfunction; either: cognitive problems, or; orthostatic intolerance.
Post-exertional malaise (PEM), sometimes referred to as post-exertional symptom exacerbation (PESE) [1] or post-exertional neuroimmune exhaustion (PENE), [2] is a worsening of symptoms that occurs after minimal exertion.
This is a shortened version of the sixteenth chapter of the ICD-9: Symptoms, Signs and Ill-defined Conditions. It covers ICD codes 780 to 799. The full chapter can be found on pages 455 to 471 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
PEM involves increased fatigue and is disabling. It can also include flu-like symptoms, pain, cognitive difficulties, gastrointestinal issues, nausea, and sleep problems. [10]: 6 Typical time frames of post-exertional malaise after normal daily activities
malaise; fever [10] These can be the initial presentation for some patients. [3] Other symptoms associated with UCTD include : [11] joint pain – the most common symptom, occurring in up to 86% of patients. [3] The pain is often an aching or arthritis-like pain in the elbows, wrists, hands, and knees, in a symmetrical pattern. [12] dry eyes ...
CFS is not included as a coded term in the 1992 ICD-10, WHO created a new category G93, Other disorders of brain, in Chapter VI, Diseases of the Nervous System, and created a new code G93.3, post-viral fatigue syndrome (PVFS), a condition which was previously in the symptom chapter of ICD-9. WHO also moved benign myalgic encephalomyelitis to ...
The CDC states that diagnostic tests should be directed to confirm or exclude other causes for fatigue and other symptoms. Further tests may be individually necessary to identify underlying or contributing conditions that require treatment. The following routine tests are recommended: [19] Complete blood count
ICD-9-CM: Volumes 1 and 2 only. Volume 3 contains Procedure codes: ICD-10: The international standard since about 1998 ICPC-2: Also includes reasons for encounter (RFE), procedure codes and process of care International Classification of Sleep Disorders: NANDA: Diagnostic and Statistical Manual of Mental Disorders: Primarily psychiatric disorders