ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.2 S66.2 Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level Non-Billable/Non-Specific Codes S66.20Unspecified injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelS66.201Unspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand levelS66.201A..., initial encounterS66.201D..., subsequent encounterS66.201S..., sequelaS66.202Unspecified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand levelS66.202A..., initial encounterS66.202D..., subsequent encounterS66.202S..., sequelaS66.209Unspecified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.209A..., initial encounterS66.209D..., subsequent encounterS66.209S..., sequelaS66.21Strain of extensor muscle, fascia and tendon of thumb at wrist and hand levelS66.211Strain of extensor muscle, fascia and tendon of right thumb at wrist and hand levelS66.211A..., initial encounterS66.211D..., subsequent encounterS66.211S..., sequelaS66.212Strain of extensor muscle, fascia and tendon of left thumb at wrist and hand levelS66.212A..., initial encounterS66.212D..., subsequent encounterS66.212S..., sequelaS66.219Strain of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.219A..., initial encounterS66.219D..., subsequent encounterS66.219S..., sequelaS66.22Laceration of extensor muscle, fascia and tendon of thumb at wrist and hand levelS66.221Laceration of extensor muscle, fascia and tendon of right thumb at wrist and hand levelS66.221A..., initial encounterS66.221D..., subsequent encounterS66.221S..., sequelaS66.222Laceration of extensor muscle, fascia and tendon of left thumb at wrist and hand levelS66.222A..., initial encounterS66.222D..., subsequent encounterS66.222S..., sequelaS66.229Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.229A..., initial encounterS66.229D..., subsequent encounterS66.229S..., sequelaS66.29Other specified injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelS66.291Other specified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand levelS66.291A..., initial encounterS66.291D..., subsequent encounterS66.291S..., sequelaS66.292Other specified injury of extensor muscle, fascia and tendon of left thumb at wrist and hand levelS66.292A..., initial encounterS66.292D..., subsequent encounterS66.292S..., sequelaS66.299Other specified injury of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand levelS66.299A..., initial encounterS66.299D..., subsequent encounterS66.299S..., sequela