2026 ICD-10-CM Diagnosis Code S27Injury of other and unspecified intrathoracic organs
S27 is a non-billable ICD-10-CM category code for injury of other and unspecified intrathoracic organs, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S27.0XXA, S27.0XXD, S27.0XXS, and S27.1XXA.
Code Identity
Code Classification
Specific Coding for Injury of other and unspecified intrathoracic organsOverview
Non-specific codes like S27 require more characters. Use one of these billable codes instead:
S27.0 for Traumatic pneumothorax
S27.1 for Traumatic hemothorax
S27.2 for Traumatic hemopneumothorax
S27.3 for Other and unspecified injuries of lung
S27.30 for Unspecified injury of lung
S27.31 for Primary blast injury of lung
S27.32 for Contusion of lung
S27.33 for Laceration of lung
S27.39 for Other injuries of lung
S27.4 for Injury of bronchus
S27.40 for Unspecified injury of bronchus
S27.41 for Primary blast injury of bronchus
S27.42 for Contusion of bronchus
S27.43 for Laceration of bronchus
S27.49 for Other injury of bronchus
S27.5 for Injury of thoracic trachea
S27.50 for Unspecified injury of thoracic trachea
S27.51 for Primary blast injury of thoracic trachea
S27.52 for Contusion of thoracic trachea
S27.53 for Laceration of thoracic trachea
S27.59 for Other injury of thoracic trachea
S27.6 for Injury of pleura
S27.60 for Unspecified injury of pleura
S27.63 for Laceration of pleura
S27.69 for Other injury of pleura
S27.8 for Injury of other specified intrathoracic organs
S27.80 for Injury of diaphragm
S27.81 for Injury of esophagus (thoracic part)
S27.89 for Injury of other specified intrathoracic organs
S27.9 for Injury of unspecified intrathoracic organ
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Injury of other and unspecified intrathoracic organs (S27). 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 of thorax S21
Type 2 Excludes
7th Character Note
- The appropriate 7th character is to be added to each code from category S27
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.
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.
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 S27Overview
Is S27 (Injury of other and unspecified intrathoracic organs) a billable code?
No. This is a category header that groups the codes for injury of other and unspecified intrathoracic organs, and headers cannot be submitted on claims. Claims for injury of other and unspecified intrathoracic organs need a more specific code from this category, such as S27.0XXA, S27.0XXD, and S27.0XXS.
