Myopathy due to other toxic agents

This code signifies a muscle disorder (myopathy) that arises as a direct consequence of exposure to toxic substances other than drugs or alcohol. It involves damage to muscle fibers, leading to weakness, pain, and functional impairment, specifically attributed to environmental or industrial toxins.

Use this code when documentation clearly links a patient's myopathy to exposure to specific toxic agents, such as heavy metals, pesticides, or certain industrial chemicals. The medical record should explicitly state the toxic agent and its causative role in the myopathy.

• Always identify the specific toxic agent if known and code it as an external cause code (T-code) in addition to this myopathy code.
• Distinguish from drug-induced myopathy (G72.0) or alcoholic myopathy (G72.1), which have separate codes.
• Ensure documentation specifies "myopathy" and not just generalized weakness or fatigue, and clearly attributes it to a toxic exposure.