ICD-10-CM 2027
ICD-10 code for intrathoracic injury
From the official ICD-10-CM alphabetic index entry “Injury › intrathoracic”. Page updated September 29, 2026.
About coding intrathoracic injury
The ICD-10-CM code for intrathoracic injury is S27.9 (Injury of unspecified intrathoracic organ). The official index lists 54 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on S27.9.
Within S27, choose S27.9 (Injury of unspecified intrathoracic organ) only when documentation doesn't support a more specific option: traumatic pneumothorax (S27.0), traumatic hemothorax (S27.1), traumatic hemopneumothorax (S27.2), other and unspecified injuries of lung (S27.3), injury of bronchus (S27.4), injury of thoracic trachea (S27.5), injury of pleura (S27.6) and injury of other specified intrathoracic organs (S27.8).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific intrathoracic injury codes (official index)
- bronchus S27.409 — Unspecified injury of bronchus, unspecified
- bilateral S27.402 — Unspecified injury of bronchus, bilateral
- blast injury (primary) S27.419 — Primary blast injury of bronchus, unspecified
- bilateral S27.412 — Primary blast injury of bronchus, bilateral
- secondary
- unilateral S27.411 — Primary blast injury of bronchus, unilateral
- contusion S27.429 — Contusion of bronchus, unspecified
- bilateral S27.422 — Contusion of bronchus, bilateral
- unilateral S27.421 — Contusion of bronchus, unilateral
- laceration S27.439 — Laceration of bronchus, unspecified
- bilateral S27.432 — Laceration of bronchus, bilateral
- unilateral S27.431 — Laceration of bronchus, unilateral
- specified type NEC S27.499 — Other injury of bronchus, unspecified
- bilateral S27.492 — Other injury of bronchus, bilateral
- unilateral S27.491 — Other injury of bronchus, unilateral
- unilateral S27.401 — Unspecified injury of bronchus, unilateral
- diaphragm S27.809 — Unspecified injury of diaphragm
- contusion S27.802 — Contusion of diaphragm
- laceration S27.803 — Laceration of diaphragm
- specified type NEC S27.808 — Other injury of diaphragm
- esophagus (thoracic) S27.819 — Unspecified injury of esophagus (thoracic part)
- contusion S27.812 — Contusion of esophagus (thoracic part)
- laceration S27.813 — Laceration of esophagus (thoracic part)
- specified type NEC S27.818 — Other injury of esophagus (thoracic part)
- heart
- hemopneumothorax S27.2 — Traumatic hemopneumothorax
- hemothorax S27.1 — Traumatic hemothorax
- lung S27.309 — Unspecified injury of lung, unspecified
- aspiration J69.0 — Pneumonitis due to inhalation of food and vomit
- bilateral S27.302 — Unspecified injury of lung, bilateral
- blast injury (primary) S27.319 — Primary blast injury of lung, unspecified
- bilateral S27.312 — Primary blast injury of lung, bilateral
- secondary
- unilateral S27.311 — Primary blast injury of lung, unilateral
- contusion S27.329 — Contusion of lung, unspecified
- bilateral S27.322 — Contusion of lung, bilateral
- unilateral S27.321 — Contusion of lung, unilateral
- laceration S27.339 — Laceration of lung, unspecified
- bilateral S27.332 — Laceration of lung, bilateral
- unilateral S27.331 — Laceration of lung, unilateral
- specified type NEC S27.399 — Other injuries of lung, unspecified
- bilateral S27.392 — Other injuries of lung, bilateral
- unilateral S27.391 — Other injuries of lung, unilateral
- unilateral S27.301 — Unspecified injury of lung, unilateral
- pleura S27.60 — Unspecified injury of pleura
- laceration S27.63 — Laceration of pleura
- specified type NEC S27.69 — Other injury of pleura
- pneumothorax S27.0 — Traumatic pneumothorax
- specified organ NEC S27.899 — Unspecified injury of other specified intrathoracic organs
- contusion S27.892 — Contusion of other specified intrathoracic organs
- laceration S27.893 — Laceration of other specified intrathoracic organs
- specified type NEC S27.898 — Other injury of other specified intrathoracic organs
- thoracic duct
- thymus gland
- trachea, thoracic S27.50 — Unspecified injury of thoracic trachea
- blast (primary) S27.51 — Primary blast injury of thoracic trachea
- contusion S27.52 — Contusion of thoracic trachea
- laceration S27.53 — Laceration of thoracic trachea
- specified type NEC S27.59 — Other injury of thoracic trachea
Common questions about intrathoracic injury ICD-10 codes
What is the ICD-10 code for intrathoracic injury?
- S27.9 — Injury of unspecified intrathoracic organ (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S27.409, S27.402, S27.419, S27.412 and others below.
What is the ICD-10 code for bronchus intrathoracic injury?
- S27.409 — Unspecified injury of bronchus, unspecified (header code; choose a more specific subcode).
What is the ICD-10 code for diaphragm intrathoracic injury?
- S27.809 — Unspecified injury of diaphragm (header code; choose a more specific subcode).
What is the ICD-10 code for esophagus intrathoracic injury?
- S27.819 — Unspecified injury of esophagus (thoracic part) (header code; choose a more specific subcode).
What is the ICD-10 code for hemopneumothorax intrathoracic injury?
- S27.2 — Traumatic hemopneumothorax (header code; choose a more specific subcode).
What is the ICD-10 code for hemothorax intrathoracic injury?
- S27.1 — Traumatic hemothorax (header code; choose a more specific subcode).
What is the ICD-10 code for lung intrathoracic injury?
- S27.309 — Unspecified injury of lung, unspecified (header code; choose a more specific subcode).
Is S27.9 billable?
- No. S27.9 is a header code. Report one of its more specific subcodes instead.