ICD-10-CM > S00-T88 > S50-S59 > S56 > S56.9 > S56.92 S56.92 Laceration of unspecified muscles, fascia and tendons at forearm level Non-Billable/Non-Specific Codes S56.921Laceration of unspecified muscles, fascia and tendons at forearm level, right armS56.921A..., initial encounterS56.921D..., subsequent encounterS56.921S..., sequelaS56.922Laceration of unspecified muscles, fascia and tendons at forearm level, left armS56.922A..., initial encounterS56.922D..., subsequent encounterS56.922S..., sequelaS56.929Laceration of unspecified muscles, fascia and tendons at forearm level, unspecified armS56.929A..., initial encounterS56.929D..., subsequent encounterS56.929S..., sequela