ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.8 > S66.81 S66.81 Strain of other specified muscles, fascia and tendons at wrist and hand level Non-Billable/Non-Specific Codes S66.811Strain of other specified muscles, fascia and tendons at wrist and hand level, right handS66.811A..., initial encounterS66.811D..., subsequent encounterS66.811S..., sequelaS66.812Strain of other specified muscles, fascia and tendons at wrist and hand level, left handS66.812A..., initial encounterS66.812D..., subsequent encounterS66.812S..., sequelaS66.819Strain of other specified muscles, fascia and tendons at wrist and hand level, unspecified handS66.819A..., initial encounterS66.819D..., subsequent encounterS66.819S..., sequela