ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.3 > S66.39 > S66.392 S66.392 Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level Non-Billable/Non-Specific Codes S66.392A..., initial encounterS66.392D..., subsequent encounterS66.392S..., sequela