ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.0 S66.0 Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level Non-Billable/Non-Specific Codes S66.00Unspecified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelS66.001Unspecified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand levelS66.001A..., initial encounterS66.001D..., subsequent encounterS66.001S..., sequelaS66.002Unspecified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand levelS66.002A..., initial encounterS66.002D..., subsequent encounterS66.002S..., sequelaS66.009Unspecified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.009A..., initial encounterS66.009D..., subsequent encounterS66.009S..., sequelaS66.01Strain of long flexor muscle, fascia and tendon of thumb at wrist and hand levelS66.011Strain of long flexor muscle, fascia and tendon of right thumb at wrist and hand levelS66.011A..., initial encounterS66.011D..., subsequent encounterS66.011S..., sequelaS66.012Strain of long flexor muscle, fascia and tendon of left thumb at wrist and hand levelS66.012A..., initial encounterS66.012D..., subsequent encounterS66.012S..., sequelaS66.019Strain of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.019A..., initial encounterS66.019D..., subsequent encounterS66.019S..., sequelaS66.02Laceration of long flexor muscle, fascia and tendon of thumb at wrist and hand levelS66.021Laceration of long flexor muscle, fascia and tendon of right thumb at wrist and hand levelS66.021A..., initial encounterS66.021D..., subsequent encounterS66.021S..., sequelaS66.022Laceration of long flexor muscle, fascia and tendon of left thumb at wrist and hand levelS66.022A..., initial encounterS66.022D..., subsequent encounterS66.022S..., sequelaS66.029Laceration of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.029A..., initial encounterS66.029D..., subsequent encounterS66.029S..., sequelaS66.09Other specified injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelS66.091Other specified injury of long flexor muscle, fascia and tendon of right thumb at wrist and hand levelS66.091A..., initial encounterS66.091D..., subsequent encounterS66.091S..., sequelaS66.092Other specified injury of long flexor muscle, fascia and tendon of left thumb at wrist and hand levelS66.092A..., initial encounterS66.092D..., subsequent encounterS66.092S..., sequelaS66.099Other specified injury of long flexor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.099A..., initial encounterS66.099D..., subsequent encounterS66.099S..., sequela