Strain extn/abdr musc/fasc/tend of l thm at forarm lv, sqla

This code signifies a chronic or late-effect injury involving the extensor or abductor muscles, their fascia, and tendons of the left thumb, specifically at the forearm level. It indicates a residual problem, such as weakness, pain, or limited range of motion, stemming from a previous strain to these structures.

Use this code when documenting a patient presenting with persistent symptoms or complications directly attributable to a past strain of the left thumb's extensor/abductor musculature at the forearm. This applies to conditions that are no longer acute but are ongoing consequences of the initial injury. Examples include chronic tendinopathy, scar tissue formation leading to dysfunction, or long-term instability following the original strain.

• Always ensure documentation clearly links the current condition to a previous strain of the specified muscles/tendons.
• The "S" seventh character indicates a sequela, meaning the code is for complications or conditions that arise as a direct result of a previous injury.
• Verify the injury location is specifically at the forearm level and involves the left thumb's extensor or abductor muscles/tendons.