S20.42Non-billable (header)
Blister (nonthermal) of back wall of thorax
Code Hierarchy
┌19Injury, poisoning and certain other consequences of external causes (S00-T88)├S20-S29Injuries to the thorax (S20-S29)├S20Superficial injury of thorax
└S20.42Blister (nonthermal) of back wall of thorax
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