Coding and coverage · ICD-10-CM

S27 Injury of other and unspecified intrathoracic organs

Not billable (header)Chapter 19

This code needs a 7th character (use X as a placeholder for missing characters).

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Codes under this one

  • S27.0 Traumatic pneumothoraxHeader
  • S27.1 Traumatic hemothoraxHeader
  • S27.2 Traumatic hemopneumothoraxHeader
  • S27.3 Other and unspecified injuries of lungHeader
  • S27.4 Injury of bronchusHeader
  • S27.5 Injury of thoracic tracheaHeader
  • S27.6 Injury of pleuraHeader
  • S27.8 Injury of other specified intrathoracic organsHeader
  • S27.9 Injury of unspecified intrathoracic organHeader

Instructional notes

Chapter 19

Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
  • code to identify any retained foreign body, if applicable (Z18.-)
Notes
  • 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.

Section S20-S29

Excludes2Not included here: the patient may have both; report both when both are present.
  • 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)
Includes
  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

This code

Excludes2Not included here: the patient may have both; report both when both are present.
  • injury of cervical esophagus (S10-S19)
  • injury of trachea (cervical) (S10-S19)
Code also
  • any associated open wound of thorax (S21.-)
7th charactersThe appropriate 7th character is to be added to each code from category S27
  • A initial encounter
  • D subsequent encounter
  • S sequela

Chapter 19: Injury, poisoning and certain other consequences of external causes · S20-S29 Injuries to the thorax (S20-S29)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.