ICD-10-CM > S00-T88 > S40-S49 > S46 > S46.8 > S46.89 > S46.899 S46.899 Other injury of other muscles, fascia and tendons at shoulder and upper arm level, unspecified arm Non-Billable/Non-Specific Codes S46.899A..., initial encounterS46.899D..., subsequent encounterS46.899S..., sequela