ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.4 > S20.44 > S20.449 S20.449 External constriction of unspecified back wall of thorax Non-Billable/Non-Specific Codes S20.449A..., initial encounterS20.449D..., subsequent encounterS20.449S..., sequela
ICD-10 Fast ICD-10 Fast