ICD-10-CM Tabular Index · Chapter 19 · FY 2026 S24

Injury of nerves and spinal cord at thorax level (S24) ICD-10-CM

The S24 code range covers injury of nerves and spinal cord at thorax level with 131 ICD-10-CM diagnosis codes. 93 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
131
Diagnosis Codes
93
Billable Codes
S24
Code Range
S20–S29
Parent Section

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the S24 Range 131 codes · 93 billable

131 of 131 shown
  • S24 Injury of nerves and spinal cord at thorax levelNon-billable
  • S24.0 Concussion and edema of thoracic spinal cordNon-billable
  • S24.0XXA Concussion and edema of thoracic spinal cord, initial encounter
  • S24.0XXD Concussion and edema of thoracic spinal cord, subsequent encounter
  • S24.0XXS Concussion and edema of thoracic spinal cord, sequela
  • S24.1 Other and unspecified injuries of thoracic spinal cordNon-billable
  • S24.10 Unspecified injury of thoracic spinal cordNon-billable
  • S24.101 Unspecified injury at T1 level of thoracic spinal cordNon-billable
  • S24.101A Unspecified injury at T1 level of thoracic spinal cord, initial encounter
  • S24.101D Unspecified injury at T1 level of thoracic spinal cord, subsequent encounter
  • S24.101S Unspecified injury at T1 level of thoracic spinal cord, sequela
  • S24.102 Unspecified injury at T2-T6 level of thoracic spinal cordNon-billable
  • S24.102A Unspecified injury at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.102D Unspecified injury at T2-T6 level of thoracic spinal cord, subsequent encounter
  • S24.102S Unspecified injury at T2-T6 level of thoracic spinal cord, sequela
  • S24.103 Unspecified injury at T7-T10 level of thoracic spinal cordNon-billable
  • S24.103A Unspecified injury at T7-T10 level of thoracic spinal cord, initial encounter
  • S24.103D Unspecified injury at T7-T10 level of thoracic spinal cord, subsequent encounter
  • S24.103S Unspecified injury at T7-T10 level of thoracic spinal cord, sequela
  • S24.104 Unspecified injury at T11-T12 level of thoracic spinal cordNon-billable
  • S24.104A Unspecified injury at T11-T12 level of thoracic spinal cord, initial encounter
  • S24.104D Unspecified injury at T11-T12 level of thoracic spinal cord, subsequent encounter
  • S24.104S Unspecified injury at T11-T12 level of thoracic spinal cord, sequela
  • S24.109 Unspecified injury at unspecified level of thoracic spinal cordNon-billable
  • S24.109A Unspecified injury at unspecified level of thoracic spinal cord, initial encounter
  • S24.109D Unspecified injury at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.109S Unspecified injury at unspecified level of thoracic spinal cord, sequela
  • S24.11 Complete lesion of thoracic spinal cordNon-billable
  • S24.111 Complete lesion at T1 level of thoracic spinal cordNon-billable
  • S24.111A Complete lesion at T1 level of thoracic spinal cord, initial encounter
  • S24.111D Complete lesion at T1 level of thoracic spinal cord, subsequent encounter
  • S24.111S Complete lesion at T1 level of thoracic spinal cord, sequela
  • S24.112 Complete lesion at T2-T6 level of thoracic spinal cordNon-billable
  • S24.112A Complete lesion at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.112D Complete lesion at T2-T6 level of thoracic spinal cord, subsequent encounter
  • S24.112S Complete lesion at T2-T6 level of thoracic spinal cord, sequela
  • S24.113 Complete lesion at T7-T10 level of thoracic spinal cordNon-billable
  • S24.113A Complete lesion at T7-T10 level of thoracic spinal cord, initial encounter
  • S24.113D Complete lesion at T7-T10 level of thoracic spinal cord, subsequent encounter
  • S24.113S Complete lesion at T7-T10 level of thoracic spinal cord, sequela
  • S24.114 Complete lesion at T11-T12 level of thoracic spinal cordNon-billable
  • S24.114A Complete lesion at T11-T12 level of thoracic spinal cord, initial encounter
  • S24.114D Complete lesion at T11-T12 level of thoracic spinal cord, subsequent encounter
  • S24.114S Complete lesion at T11-T12 level of thoracic spinal cord, sequela
  • S24.119 Complete lesion at unspecified level of thoracic spinal cordNon-billable
  • S24.119A Complete lesion at unspecified level of thoracic spinal cord, initial encounter
  • S24.119D Complete lesion at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.119S Complete lesion at unspecified level of thoracic spinal cord, sequela
  • S24.13 Anterior cord syndrome of thoracic spinal cordNon-billable
  • S24.131 Anterior cord syndrome at T1 level of thoracic spinal cordNon-billable
  • S24.131A Anterior cord syndrome at T1 level of thoracic spinal cord, initial encounter
  • S24.131D Anterior cord syndrome at T1 level of thoracic spinal cord, subsequent encounter
  • S24.131S Anterior cord syndrome at T1 level of thoracic spinal cord, sequela
  • S24.132 Anterior cord syndrome at T2-T6 level of thoracic spinal cordNon-billable
  • S24.132A Anterior cord syndrome at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.132D Anterior cord syndrome at T2-T6 level of thoracic spinal cord, subsequent encounter
  • S24.132S Anterior cord syndrome at T2-T6 level of thoracic spinal cord, sequela
  • S24.133 Anterior cord syndrome at T7-T10 level of thoracic spinal cordNon-billable
  • S24.133A Anterior cord syndrome at T7-T10 level of thoracic spinal cord, initial encounter
  • S24.133D Anterior cord syndrome at T7-T10 level of thoracic spinal cord, subsequent encounter
  • S24.133S Anterior cord syndrome at T7-T10 level of thoracic spinal cord, sequela
  • S24.134 Anterior cord syndrome at T11-T12 level of thoracic spinal cordNon-billable
  • S24.134A Anterior cord syndrome at T11-T12 level of thoracic spinal cord, initial encounter
  • S24.134D Anterior cord syndrome at T11-T12 level of thoracic spinal cord, subsequent encounter
  • S24.134S Anterior cord syndrome at T11-T12 level of thoracic spinal cord, sequela
  • S24.139 Anterior cord syndrome at unspecified level of thoracic spinal cordNon-billable
  • S24.139A Anterior cord syndrome at unspecified level of thoracic spinal cord, initial encounter
  • S24.139D Anterior cord syndrome at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.139S Anterior cord syndrome at unspecified level of thoracic spinal cord, sequela
  • S24.14 Brown-Sequard syndrome of thoracic spinal cordNon-billable
  • S24.141 Brown-Sequard syndrome at T1 level of thoracic spinal cordNon-billable
  • S24.141A Brown-Sequard syndrome at T1 level of thoracic spinal cord, initial encounter
  • S24.141D Brown-Sequard syndrome at T1 level of thoracic spinal cord, subsequent encounter
  • S24.141S Brown-Sequard syndrome at T1 level of thoracic spinal cord, sequela
  • S24.142 Brown-Sequard syndrome at T2-T6 level of thoracic spinal cordNon-billable
  • S24.142A Brown-Sequard syndrome at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.142D Brown-Sequard syndrome at T2-T6 level of thoracic spinal cord, subsequent encounter
  • S24.142S Brown-Sequard syndrome at T2-T6 level of thoracic spinal cord, sequela
  • S24.143 Brown-Sequard syndrome at T7-T10 level of thoracic spinal cordNon-billable
  • S24.143A Brown-Sequard syndrome at T7-T10 level of thoracic spinal cord, initial encounter
  • S24.143D Brown-Sequard syndrome at T7-T10 level of thoracic spinal cord, subsequent encounter
  • S24.143S Brown-Sequard syndrome at T7-T10 level of thoracic spinal cord, sequela
  • S24.144 Brown-Sequard syndrome at T11-T12 level of thoracic spinal cordNon-billable
  • S24.144A Brown-Sequard syndrome at T11-T12 level of thoracic spinal cord, initial encounter
  • S24.144D Brown-Sequard syndrome at T11-T12 level of thoracic spinal cord, subsequent encounter
  • S24.144S Brown-Sequard syndrome at T11-T12 level of thoracic spinal cord, sequela
  • S24.149 Brown-Sequard syndrome at unspecified level of thoracic spinal cordNon-billable
  • S24.149A Brown-Sequard syndrome at unspecified level of thoracic spinal cord, initial encounter
  • S24.149D Brown-Sequard syndrome at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.149S Brown-Sequard syndrome at unspecified level of thoracic spinal cord, sequela
  • S24.15 Other incomplete lesions of thoracic spinal cordNon-billable
  • S24.151 Other incomplete lesion at T1 level of thoracic spinal cordNon-billable
  • S24.151A Other incomplete lesion at T1 level of thoracic spinal cord, initial encounter
  • S24.151D Other incomplete lesion at T1 level of thoracic spinal cord, subsequent encounter
  • S24.151S Other incomplete lesion at T1 level of thoracic spinal cord, sequela
  • S24.152 Other incomplete lesion at T2-T6 level of thoracic spinal cordNon-billable
  • S24.152A Other incomplete lesion at T2-T6 level of thoracic spinal cord, initial encounter
  • S24.152D Other incomplete lesion at T2-T6 level of thoracic spinal cord, subsequent encounter
  • S24.152S Other incomplete lesion at T2-T6 level of thoracic spinal cord, sequela
  • S24.153 Other incomplete lesion at T7-T10 level of thoracic spinal cordNon-billable
  • S24.153A Other incomplete lesion at T7-T10 level of thoracic spinal cord, initial encounter
  • S24.153D Other incomplete lesion at T7-T10 level of thoracic spinal cord, subsequent encounter
  • S24.153S Other incomplete lesion at T7-T10 level of thoracic spinal cord, sequela
  • S24.154 Other incomplete lesion at T11-T12 level of thoracic spinal cordNon-billable
  • S24.154A Other incomplete lesion at T11-T12 level of thoracic spinal cord, initial encounter
  • S24.154D Other incomplete lesion at T11-T12 level of thoracic spinal cord, subsequent encounter
  • S24.154S Other incomplete lesion at T11-T12 level of thoracic spinal cord, sequela
  • S24.159 Other incomplete lesion at unspecified level of thoracic spinal cordNon-billable
  • S24.159A Other incomplete lesion at unspecified level of thoracic spinal cord, initial encounter
  • S24.159D Other incomplete lesion at unspecified level of thoracic spinal cord, subsequent encounter
  • S24.159S Other incomplete lesion at unspecified level of thoracic spinal cord, sequela
  • S24.2 Injury of nerve root of thoracic spineNon-billable
  • S24.2XXA Injury of nerve root of thoracic spine, initial encounter
  • S24.2XXD Injury of nerve root of thoracic spine, subsequent encounter
  • S24.2XXS Injury of nerve root of thoracic spine, sequela
  • S24.3 Injury of peripheral nerves of thoraxNon-billable
  • S24.3XXA Injury of peripheral nerves of thorax, initial encounter
  • S24.3XXD Injury of peripheral nerves of thorax, subsequent encounter
  • S24.3XXS Injury of peripheral nerves of thorax, sequela
  • S24.4 Injury of thoracic sympathetic nervous systemNon-billable
  • S24.4XXA Injury of thoracic sympathetic nervous system, initial encounter
  • S24.4XXD Injury of thoracic sympathetic nervous system, subsequent encounter
  • S24.4XXS Injury of thoracic sympathetic nervous system, sequela
  • S24.8 Injury of other specified nerves of thoraxNon-billable
  • S24.8XXA Injury of other specified nerves of thorax, initial encounter
  • S24.8XXD Injury of other specified nerves of thorax, subsequent encounter
  • S24.8XXS Injury of other specified nerves of thorax, sequela
  • S24.9 Injury of unspecified nerve of thoraxNon-billable
  • S24.9XXA Injury of unspecified nerve of thorax, initial encounter
  • S24.9XXD Injury of unspecified nerve of thorax, subsequent encounter
  • S24.9XXS Injury of unspecified nerve of thorax, sequela

About the S24 Code Range

ICD-10 code section S24 covers injuries to the nerves and spinal cord specifically at the thoracic (mid-back) level. These codes identify different types of damage ranging from concussions and swelling to complete lesions and syndromes affecting various thoracic spinal levels.

This section helps coders accurately classify thoracic spinal cord injuries such as concussion and edema of thoracic spinal cord (S24.0), including synonyms like spinal cord concussion and traumatic edema of thoracic spinal cord. It also details unspecified injuries at specific thoracic segments (e.g., T1 to T12), recognizing distinctions important for treatment and reporting. Codes like S24.11 refer to complete lesions, while S24.13 and S24.14 address specific syndromes such as anterior cord syndrome and Brown-Sequard syndrome.

The section further includes injuries to thoracic nerve roots (S24.2), peripheral nerves (S24.3), sympathetic nervous system components (S24.4), and other specified or unspecified nerves. Many codes distinguish between initial encounter, subsequent encounter, and sequela to capture the stage of care. This classification ensures precise documentation for conditions like thoracic nerve root injury and long thoracic nerve injury, aiding in clinical management and accurate use of the ICD-10 code for thoracic spinal cord injury.

Questions About This Page

How many billable codes are in the S24 range?

Of the 131 codes in this range, 93 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the S24 range classify?

The range classifies injury of nerves and spinal cord at thorax level. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.