ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.8 > S66.80 > S66.809 S66.809 Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand Non-Billable/Non-Specific Codes S66.809A..., initial encounterS66.809D..., subsequent encounterS66.809S..., sequela