S20.441 External constriction of right back wall of thoraxNon-billable ICD-10-CM code.
S20.429 Blister (nonthermal) of unspecified back wall of thoraxS20.429A Blister (nonthermal) of unspecified back wall of thorax, initial encounterS20.429D Blister (nonthermal) of unspecified back wall of thorax, subsequent encounterS20.429S Blister (nonthermal) of unspecified back wall of thorax, sequelaS20.44 External constriction of back wall of thoraxS20.441 External constriction of right back wall of thorax (this code)S20.441A External constriction of right back wall of thorax, initial encounterS20.441D External constriction of right back wall of thorax, subsequent encounterS20.441S External constriction of right back wall of thorax, sequelaS20.442 External constriction of left back wall of thoraxS20.442A External constriction of left back wall of thorax, initial encounter