ICD-10-CM > S00-T88 > S20-S29 > S21 > S21.0 > S21.03 S21.03 Puncture wound without foreign body of breast Non-Billable/Non-Specific Codes S21.031Puncture wound without foreign body of right breastS21.031A..., initial encounterS21.031D..., subsequent encounterS21.031S..., sequelaS21.032Puncture wound without foreign body of left breastS21.032A..., initial encounterS21.032D..., subsequent encounterS21.032S..., sequelaS21.039Puncture wound without foreign body of unspecified breastS21.039A..., initial encounterS21.039D..., subsequent encounterS21.039S..., sequela