ICD-10-CM > S00-T88 > S20-S29 > S20 > S20.9 S20.9 Superficial injury of unspecified parts of thorax Non-Billable/Non-Specific Type 1 Excludes contusion of thorax NOS (S20.20) Codes S20.90Unspecified superficial injury of unspecified parts of thoraxS20.90XA..., initial encounterS20.90XD..., subsequent encounterS20.90XS..., sequelaS20.91Abrasion of unspecified parts of thoraxS20.91XA..., initial encounterS20.91XD..., subsequent encounterS20.91XS..., sequelaS20.92Blister (nonthermal) of unspecified parts of thoraxS20.92XA..., initial encounterS20.92XD..., subsequent encounterS20.92XS..., sequelaS20.94External constriction of unspecified parts of thoraxS20.94XA..., initial encounterS20.94XD..., subsequent encounterS20.94XS..., sequelaS20.95Superficial foreign body of unspecified parts of thoraxS20.95XA..., initial encounterS20.95XD..., subsequent encounterS20.95XS..., sequelaS20.96Insect bite (nonvenomous) of unspecified parts of thoraxS20.96XA..., initial encounterS20.96XD..., subsequent encounterS20.96XS..., sequelaS20.97Other superficial bite of unspecified parts of thoraxS20.97XA..., initial encounterS20.97XD..., subsequent encounterS20.97XS..., sequela