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ICD-10-CM · FY 2026 APRIL UPDATE

S21.42

Laceration with foreign body of back 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
S21.421Laceration with foreign body of right back wall of thorax with penetration into thoracic cavityCategory
S21.421ALaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.421DLaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.421SLaceration with foreign body of right back wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.422Laceration with foreign body of left back wall of thorax with penetration into thoracic cavityCategory
S21.422ALaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.422DLaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.422SLaceration with foreign body of left back wall of thorax with penetration into thoracic cavity, sequelaBillable
S21.429Laceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavityCategory
S21.429ALaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, initial encounterBillable
S21.429DLaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, subsequent encounterBillable
S21.429SLaceration with foreign body of unspecified back wall of thorax with penetration into thoracic cavity, 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.