Strain of musc/fasc/tend at wrs/hnd lv, unsp hand, subs

This code signifies a muscle, fascia, or tendon strain in the wrist or hand region, excluding the thumb or finger-specific sites. It indicates that the patient is receiving follow-up care for an injury that was previously diagnosed and treated. The specific hand affected is not documented.

Apply this code for subsequent encounters when a patient presents for ongoing management, such as physical therapy, re-evaluation, or medication refills, related to a wrist or hand strain of a muscle, fascia, or tendon not otherwise specified. This is appropriate when the initial injury has already been coded and the current visit is for continued care.

• Ensure documentation clearly states this is a subsequent encounter for an existing strain.
• Verify that the strain is not specifically of the thumb or other finger, which would require a more specific code.
• If the affected hand is known, a more specific code (e.g., S66.811D for right hand) should be used instead.