ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.5 > S56.51 > S56.511 S56.511 Strain of other extensor muscle, fascia and tendon at forearm level, right arm Non-Billable/Non-Specific Codes S56.511A..., initial encounterS56.511D..., subsequent encounterS56.511S..., sequela