ICD-10-CM · FY 2026 APRIL UPDATE

S21.2

Open wound of back wall of thorax without 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

CODE	DESCRIPTION	TYPE
S21.20	Unspecified open wound of back wall of thorax without penetration into thoracic cavity	Category
S21.201	Unspecified open wound of right back wall of thorax without penetration into thoracic cavity	Category
S21.201A	Unspecified open wound of right back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.201D	Unspecified open wound of right back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.201S	Unspecified open wound of right back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.202	Unspecified open wound of left back wall of thorax without penetration into thoracic cavity	Category
S21.202A	Unspecified open wound of left back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.202D	Unspecified open wound of left back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.202S	Unspecified open wound of left back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.209	Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity	Category
S21.209A	Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.209D	Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.209S	Unspecified open wound of unspecified back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.21	Laceration without foreign body of back wall of thorax without penetration into thoracic cavity	Category
S21.211	Laceration without foreign body of right back wall of thorax without penetration into thoracic cavity	Category
S21.211A	Laceration without foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.211D	Laceration without foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.211S	Laceration without foreign body of right back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.212	Laceration without foreign body of left back wall of thorax without penetration into thoracic cavity	Category
S21.212A	Laceration without foreign body of left back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.212D	Laceration without foreign body of left back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.212S	Laceration without foreign body of left back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.219	Laceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity	Category
S21.219A	Laceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.219D	Laceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable
S21.219S	Laceration without foreign body of unspecified back wall of thorax without penetration into thoracic cavity, sequela	Billable
S21.22	Laceration with foreign body of back wall of thorax without penetration into thoracic cavity	Category
S21.221	Laceration with foreign body of right back wall of thorax without penetration into thoracic cavity	Category
S21.221A	Laceration with foreign body of right back wall of thorax without penetration into thoracic cavity, initial encounter	Billable
S21.221D	Laceration with foreign body of right back wall of thorax without penetration into thoracic cavity, subsequent encounter	Billable

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.