ICD-10-CM > S00-T88 > S20-S29 > S28 > S28.2 > S28.22 S28.22 Partial traumatic amputation of breast Non-Billable/Non-Specific Codes S28.221Partial traumatic amputation of right breastS28.221A..., initial encounterS28.221D..., subsequent encounterS28.221S..., sequelaS28.222Partial traumatic amputation of left breastS28.222A..., initial encounterS28.222D..., subsequent encounterS28.222S..., sequelaS28.229Partial traumatic amputation of unspecified breastS28.229A..., initial encounterS28.229D..., subsequent encounterS28.229S..., sequela