Inj flexor musc/fasc/tend left thumb at forearm level, subs

This code signifies a follow-up encounter for an injury to a flexor muscle, fascia, or tendon of the left thumb, specifically located at the forearm level, that is not further specified as a laceration or puncture. This indicates a non-open wound injury to these structures.

This code is appropriate for subsequent visits related to the initial healing or management of a left thumb flexor muscle, fascia, or tendon injury at the forearm level. This includes scenarios such as cast changes, physical therapy sessions, or follow-up evaluations after the initial treatment of a sprain, strain, or other non-laceration injury to these specific structures.

• Ensure the documentation clearly specifies "left thumb" and "forearm level" for the injury.
• Confirm this is a subsequent encounter (D) and not the initial (A) or sequela (S) phase of care.
• Distinguish from lacerations (S66.112-) or puncture wounds (S66.122-) which have their own specific codes.