Myopathy in endocrine diseases classified elsewhere

This code describes a muscle disorder (myopathy) that arises as a complication or manifestation of an underlying endocrine disease. The myopathy is not the primary condition but rather a secondary effect of hormonal imbalances or metabolic disturbances caused by an endocrine system dysfunction.

Use this code when documentation clearly links a patient's myopathy to a specific endocrine disorder, such as thyroid disease (e.g., hyperthyroidism, hypothyroidism), adrenal insufficiency, or Cushing's syndrome. The physician's notes should explicitly state the endocrine condition as the cause of the myopathy.

• Always code the underlying endocrine disease first, as it is the primary etiology.
• Ensure the documentation specifies "myopathy" and not just generalized weakness or fatigue.
• Do not use for myopathies of unknown origin or those clearly linked to non-endocrine causes.