Strain of flexor musc/fasc/tend thmb at forarm lv, sequela

This code signifies a chronic or residual effect from a previous strain injury to the flexor muscles, fascia, or tendons of an unspecified thumb, with the injury site located at the forearm level. It indicates that the initial acute injury has resolved, but the patient continues to experience symptoms or limitations directly attributable to that past strain.

Use this code when documenting a patient presenting with ongoing pain, weakness, or restricted movement in the thumb and forearm region, where the history clearly points to a prior strain of the thumb flexor structures at the forearm level. This is appropriate for follow-up visits addressing the long-term consequences of such an injury, rather than the initial acute event.

• Ensure documentation clearly links current symptoms to a previous strain, not an acute injury.
• Verify the injury location is specifically at the forearm level for the thumb flexors.
• Confirm the thumb is unspecified if laterality is not documented or known.