S56.012 Strain of flexor muscle, fascia and tendon of left thumb at forearm levelNon-billable ICD-10-CM code.
S46 Injury of muscle, fascia and tendon at shoulder and upper arm level ("injury of muscle, fascia and tendon at elbow (S56.-)")S53 Dislocation and sprain of joints and ligaments of elbow ("strain of muscle, fascia and tendon at forearm level (S56.-)")S56.01 Strain of flexor muscle, fascia and tendon of thumb at forearm levelS56.011 Strain of flexor muscle, fascia and tendon of right thumb at forearm levelS56.011A Strain of flexor muscle, fascia and tendon of right thumb at forearm level, initial encounterS56.011D Strain of flexor muscle, fascia and tendon of right thumb at forearm level, subsequent encounterS56.011S Strain of flexor muscle, fascia and tendon of right thumb at forearm level, sequelaS56.012 Strain of flexor muscle, fascia and tendon of left thumb at forearm level (this code)S56.012A Strain of flexor muscle, fascia and tendon of left thumb at forearm level, initial encounterS56.012D Strain of flexor muscle, fascia and tendon of left thumb at forearm level, subsequent encounterS56.012S Strain of flexor muscle, fascia and tendon of left thumb at forearm level, sequelaS56.019 Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm levelS56.019A Strain of flexor muscle, fascia and tendon of unspecified thumb at forearm level, initial encounter