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ICD-10-CM · FY 2026 APRIL UPDATE

S21.3

Open wound of front wall of thorax with penetration into thoracic cavity

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
S21.30Unspecified open wound of front wall of thorax with penetration into thoracic cavityCategory
S21.301Unspecified open wound of right front wall of thorax with penetration into thoracic cavityCategory
S21.301AUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.301DUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.301SUnspecified open wound of right front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.302Unspecified open wound of left front wall of thorax with penetration into thoracic cavityCategory
S21.302AUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.302DUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.302SUnspecified open wound of left front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.309Unspecified open wound of unspecified front wall of thorax with penetration into thoracic cavityCategory
S21.309AUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.309DUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.309SUnspecified open wound of unspecified front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.31Laceration without foreign body of front wall of thorax with penetration into thoracic cavityCategory
S21.311Laceration without foreign body of right front wall of thorax with penetration into thoracic cavityCategory
S21.311ALaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.311DLaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.311SLaceration without foreign body of right front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.312Laceration without foreign body of left front wall of thorax with penetration into thoracic cavityCategory
S21.312ALaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.312DLaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.312SLaceration without foreign body of left front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.319Laceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavityCategory
S21.319ALaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.319DLaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.319SLaceration without foreign body of unspecified front wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.32Laceration with foreign body of front wall of thorax with penetration into thoracic cavityCategory
S21.321Laceration with foreign body of right front wall of thorax with penetration into thoracic cavityCategory
S21.321ALaceration with foreign body of right front wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.321DLaceration with foreign body of right front wall of thorax with penetration into thoracic cavity, 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.