ICD-10-CM > S00-T88 > S40-S49 > S43 > S43.4 > S43.42 > S43.421 S43.421 Sprain of right rotator cuff capsule Non-Billable/Non-Specific Codes S43.421A..., initial encounterS43.421D..., subsequent encounterS43.421S..., sequela