ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.4 > S56.49 S56.49 Other injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level Non-Billable/Non-Specific Codes S56.491Other injury of extensor muscle, fascia and tendon of right index finger at forearm levelS56.491A..., initial encounterS56.491D..., subsequent encounterS56.491S..., sequelaS56.492Other injury of extensor muscle, fascia and tendon of left index finger at forearm levelS56.492A..., initial encounterS56.492D..., subsequent encounterS56.492S..., sequelaS56.493Other injury of extensor muscle, fascia and tendon of right middle finger at forearm levelS56.493A..., initial encounterS56.493D..., subsequent encounterS56.493S..., sequelaS56.494Other injury of extensor muscle, fascia and tendon of left middle finger at forearm levelS56.494A..., initial encounterS56.494D..., subsequent encounterS56.494S..., sequelaS56.495Other injury of extensor muscle, fascia and tendon of right ring finger at forearm levelS56.495A..., initial encounterS56.495D..., subsequent encounterS56.495S..., sequelaS56.496Other injury of extensor muscle, fascia and tendon of left ring finger at forearm levelS56.496A..., initial encounterS56.496D..., subsequent encounterS56.496S..., sequelaS56.497Other injury of extensor muscle, fascia and tendon of right little finger at forearm levelS56.497A..., initial encounterS56.497D..., subsequent encounterS56.497S..., sequelaS56.498Other injury of extensor muscle, fascia and tendon of left little finger at forearm levelS56.498A..., initial encounterS56.498D..., subsequent encounterS56.498S..., sequelaS56.499Other injury of extensor muscle, fascia and tendon of unspecified finger at forearm levelS56.499A..., initial encounterS56.499D..., subsequent encounterS56.499S..., sequela