ICD-10-CM 2027 diagnosis code

S27Injury of other and unspecified intrathoracic organs

Not billable — use a more specific code

S27 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S27

S27 is the ICD-10-CM diagnosis code for injury of other and unspecified intrathoracic organs. It belongs to block S20-S29 (injuries to the thorax) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: S27.0 (pneumothorax), S27.1 (hemothorax), S27.2 (hemopneumothorax), S27.3 (lung), S27.4 (bronchus), S27.5 (trachea), S27.6 (pleura), S27.8 (organs) and 1 more.

The conditions in its Excludes2 note aren't part of S27, but may be coded alongside it if the patient has both: injury of cervical esophagus (S10-S19) and injury of trachea (cervical) (S10-S19).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under S27

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

injury of cervical esophagus (S10-S19)
injury of trachea (cervical) (S10-S19)

Code alsoTwo codes may be needed; sequencing depends on circumstances

any associated open wound of thorax (S21.-)

Notes that apply from higher levels

Instructions written at a parent level also apply to S27.

Broader instructions also apply from S20-S29 Injuries to the thorax and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Codes whose notes reference S27

S21Code also
S22Code also

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about S27

Is S27 billable?: No. S27 is a header code. Report one of its more specific subcodes instead.