Other myositis, unspecified forearm

This code signifies an inflammatory condition affecting the muscles of the forearm, not otherwise specified as infectious, toxic, or granulomatous. It indicates a general myositis of the forearm when a more specific etiology or type of myositis cannot be determined.

Apply this code when documentation indicates myositis in an unspecified forearm, and the specific type of myositis (e.g., infectious, parasitic, toxic) is not documented. This code is appropriate when the physician's diagnosis is "myositis of forearm, NOS" or "other myositis of forearm" without further detail.

• Ensure the documentation specifies "forearm" and not another upper limb region.
• Avoid using this code if a more specific type of myositis (e.g., M60.0- Infectious myositis) is identified.
• Always review the medical record for laterality (left or right forearm) to determine if a more specific code (M60.831 or M60.832) can be assigned.