ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.5 > S66.59 > S66.590 S66.590 Other injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level Non-Billable/Non-Specific Codes S66.590A..., initial encounterS66.590D..., subsequent encounterS66.590S..., sequela