ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.1 > S20.14 > S20.149 S20.149 External constriction of part of breast, unspecified breast Non-Billable/Non-Specific Codes S20.149A..., initial encounterS20.149D..., subsequent encounterS20.149S..., sequela