ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.8 > S66.81 > S66.812 S66.812 Strain of other specified muscles, fascia and tendons at wrist and hand level, left hand Non-Billable/Non-Specific Codes S66.812A..., initial encounterS66.812D..., subsequent encounterS66.812S..., sequela