ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.5 > S56.50 > S56.502 S56.502 Unspecified injury of other extensor muscle, fascia and tendon at forearm level, left arm Non-Billable/Non-Specific Codes S56.502A..., initial encounterS56.502D..., subsequent encounterS56.502S..., sequela