Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

S21.9

Open wound of unspecified part 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
S21.90Unspecified open wound of unspecified part of thoraxCategory
S21.90XAUnspecified open wound of unspecified part of thorax, initial encounterBillable
S21.90XDUnspecified open wound of unspecified part of thorax, subsequent encounterBillable
S21.90XSUnspecified open wound of unspecified part of thorax, sequelaBillable
S21.91Laceration without foreign body of unspecified part of thoraxCategory
S21.91XALaceration without foreign body of unspecified part of thorax, initial encounterBillable
S21.91XDLaceration without foreign body of unspecified part of thorax, subsequent encounterBillable
S21.91XSLaceration without foreign body of unspecified part of thorax, sequelaBillable
S21.92Laceration with foreign body of unspecified part of thoraxCategory
S21.92XALaceration with foreign body of unspecified part of thorax, initial encounterBillable
S21.92XDLaceration with foreign body of unspecified part of thorax, subsequent encounterBillable
S21.92XSLaceration with foreign body of unspecified part of thorax, sequelaBillable
S21.93Puncture wound without foreign body of unspecified part of thoraxCategory
S21.93XAPuncture wound without foreign body of unspecified part of thorax, initial encounterBillable
S21.93XDPuncture wound without foreign body of unspecified part of thorax, subsequent encounterBillable
S21.93XSPuncture wound without foreign body of unspecified part of thorax, sequelaBillable
S21.94Puncture wound with foreign body of unspecified part of thoraxCategory
S21.94XAPuncture wound with foreign body of unspecified part of thorax, initial encounterBillable
S21.94XDPuncture wound with foreign body of unspecified part of thorax, subsequent encounterBillable
S21.94XSPuncture wound with foreign body of unspecified part of thorax, sequelaBillable
S21.95Open bite of unspecified part of thoraxCategory
S21.95XAOpen bite of unspecified part of thorax, initial encounterBillable
S21.95XDOpen bite of unspecified part of thorax, subsequent encounterBillable
S21.95XSOpen bite of unspecified part of thorax, sequelaBillable

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.