2027 ICD-10-CM Diagnosis Code S27Injury of other and unspecified intrathoracic organs

ICD-10-CM Codes›S00–T88›S20-S29›S27

ICD-10-CM S27
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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

ICD-10-CM Code
S27
Billable Status
No — Non-Billable Category
Code Describes
Injury of other and unspecified intrathoracic organs
Short Description
Injury of other and unspecified intrathoracic organs
Same as the full description in the CMS dataset.
Chapter
S20-S29
Injuries to the thorax

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS20-S29Injuries to the thorax
CategoryS27Injury of other and unspecified intrathoracic organs
This CodeS27Injury of other and unspecified intrathoracic organs

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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S27: its own notes plus those printed at block S20-S29 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block S20-S29 Injuries to the thorax applies to 1,602 codes
  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On S27 itself
  • injury of cervical esophagus (S10-S19)
  • injury of trachea (cervical) (S10-S19)
From Block S20-S29 Injuries to the thorax applies to 1,602 codes
  • burns and corrosions (T20-T32)
  • effects of foreign body in bronchus (T17.5)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in lung (T17.8)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • injuries of axilla
  • injuries of clavicle
  • injuries of scapular region
  • injuries of shoulder
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

  • any associated open wound of thorax (S21.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category S27
Values for category S27 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S27, its category, or a range that includes it.

Code Also 2

These codes say S27 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • S21 Open wound of thorax
    injury of intrathoracic organs (S27.-)
  • S22 Fracture of rib(s), sternum and thoracic spine
    injury of intrathoracic organ (S27.-)

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

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S27Overview

What is the ICD-10 code for injury of other and unspecified intrathoracic organs?

S27 is the ICD-10-CM category for injury of other and unspecified intrathoracic organs, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.