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S20.44
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S20.449
S20.449
External constriction of unspecified back wall of thorax
S20.449A
External constriction of unsp back wall of thorax, init
Billable
Notes
S20.449D
External constriction of unsp back wall of thorax, subs
Billable
Notes
S20.449S
External constriction of unsp back wall of thorax, sequela
Billable
Notes