2026 ICD-10-CM Diagnosis Code S29Other and unspecified injuries of thorax
S29 is a non-billable ICD-10-CM category code for other and unspecified injuries of thorax, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S29.001A, S29.001D, S29.001S, and S29.002A.
Code Identity
Code Classification
Specific Coding for Other and unspecified injuries of thoraxOverview
Non-specific codes like S29 require more characters. Use one of these billable codes instead:
S29.0 for Injury of muscle and tendon at thorax level
S29.00 for Unspecified injury of muscle and tendon of thorax
S29.01 for Strain of muscle and tendon of thorax
S29.02 for Laceration of muscle and tendon of thorax
S29.09 for Other injury of muscle and tendon of thorax
S29.8 for Other specified injuries of thorax
S29.9 for Unspecified injury of thorax
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Other and unspecified injuries of thorax (S29). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Code Also
- any associated open wound S21
7th Character Note
- The appropriate 7th character is to be added to each code from category S29
7th Character
- A - initial encounter
- D - subsequent encounter
- S - sequela
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
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.
Indicates that a seventh character is to be assigned to codes in a subcategory.
Patient EducationClinical
Chest Injuries and Disorders
The chest is the part of your body between your neck and your abdomen (belly). The medical term for your chest is thorax.
The full article covers:
- What is the chest?
- What are chest injuries and disorders?
- How are chest injuries and disorders diagnosed?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code HistoryHistory
Questions About S29Overview
Is S29 (Other and unspecified injuries of thorax) a billable code?
No. This is a category header that groups the codes for other and unspecified injuries of thorax, and headers cannot be submitted on claims. Claims for other and unspecified injuries of thorax need a more specific code from this category, such as S29.001A, S29.001D, and S29.001S.
