ICD-10-CM > S00-T88 > S60-S69 > S66 > S66.3 > S66.39 S66.39 Other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level Non-Billable/Non-Specific Codes S66.390Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand levelS66.390A..., initial encounterS66.390D..., subsequent encounterS66.390S..., sequelaS66.391Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand levelS66.391A..., initial encounterS66.391D..., subsequent encounterS66.391S..., sequelaS66.392Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand levelS66.392A..., initial encounterS66.392D..., subsequent encounterS66.392S..., sequelaS66.393Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand levelS66.393A..., initial encounterS66.393D..., subsequent encounterS66.393S..., sequelaS66.394Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand levelS66.394A..., initial encounterS66.394D..., subsequent encounterS66.394S..., sequelaS66.395Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand levelS66.395A..., initial encounterS66.395D..., subsequent encounterS66.395S..., sequelaS66.396Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand levelS66.396A..., initial encounterS66.396D..., subsequent encounterS66.396S..., sequelaS66.397Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand levelS66.397A..., initial encounterS66.397D..., subsequent encounterS66.397S..., sequelaS66.398Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand levelS66.398A..., initial encounterS66.398D..., subsequent encounterS66.398S..., sequelaS66.399Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand levelS66.399A..., initial encounterS66.399D..., subsequent encounterS66.399S..., sequela