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ICD-10-CM · FY 2026 APRIL UPDATE

S20.4

Other and unspecified superficial injuries of back wall of thorax

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
S20.40Unspecified superficial injuries of back wall of thoraxCategory
S20.401Unspecified superficial injuries of right back wall of thoraxCategory
S20.401AUnspecified superficial injuries of right back wall of thorax, initial encounterBillable
S20.401DUnspecified superficial injuries of right back wall of thorax, subsequent encounterBillable
S20.401SUnspecified superficial injuries of right back wall of thorax, sequelaBillable
S20.402Unspecified superficial injuries of left back wall of thoraxCategory
S20.402AUnspecified superficial injuries of left back wall of thorax, initial encounterBillable
S20.402DUnspecified superficial injuries of left back wall of thorax, subsequent encounterBillable
S20.402SUnspecified superficial injuries of left back wall of thorax, sequelaBillable
S20.409Unspecified superficial injuries of unspecified back wall of thoraxCategory
S20.409AUnspecified superficial injuries of unspecified back wall of thorax, initial encounterBillable
S20.409DUnspecified superficial injuries of unspecified back wall of thorax, subsequent encounterBillable
S20.409SUnspecified superficial injuries of unspecified back wall of thorax, sequelaBillable
S20.41Abrasion of back wall of thoraxCategory
S20.411Abrasion of right back wall of thoraxCategory
S20.411AAbrasion of right back wall of thorax, initial encounterBillable
S20.411DAbrasion of right back wall of thorax, subsequent encounterBillable
S20.411SAbrasion of right back wall of thorax, sequelaBillable
S20.412Abrasion of left back wall of thoraxCategory
S20.412AAbrasion of left back wall of thorax, initial encounterBillable
S20.412DAbrasion of left back wall of thorax, subsequent encounterBillable
S20.412SAbrasion of left back wall of thorax, sequelaBillable
S20.419Abrasion of unspecified back wall of thoraxCategory
S20.419AAbrasion of unspecified back wall of thorax, initial encounterBillable
S20.419DAbrasion of unspecified back wall of thorax, subsequent encounterBillable
S20.419SAbrasion of unspecified back wall of thorax, sequelaBillable
S20.42Blister (nonthermal) of back wall of thoraxCategory
S20.421Blister (nonthermal) of right back wall of thoraxCategory
S20.421ABlister (nonthermal) of right back wall of thorax, initial encounterBillable
S20.421DBlister (nonthermal) of right back wall of thorax, subsequent encounterBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.