S27.429A Contusion of bronchus, unspecified, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S27.429 with 7th character A (initial encounter).

Applies from S27 Injury of other and unspecified intrathoracic organs

Excludes2 (not included here)

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

Code also

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

7th character note

• The appropriate 7th character is to be added to each code from category S27

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to S27.429A

Back-references to S27

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

Diagnosis Index entries for S27.429A

• Injury › intrathoracic › bronchus › contusion

Nearby codes

• S27.422 Contusion of bronchus, bilateral
• S27.422A Contusion of bronchus, bilateral, initial encounter
• S27.422D Contusion of bronchus, bilateral, subsequent encounter
• S27.422S Contusion of bronchus, bilateral, sequela
• S27.429 Contusion of bronchus, unspecified
• S27.429A Contusion of bronchus, unspecified, initial encounter (this code)
• S27.429D Contusion of bronchus, unspecified, subsequent encounter
• S27.429S Contusion of bronchus, unspecified, sequela
• S27.43 Laceration of bronchus
• S27.431 Laceration of bronchus, unilateral
• S27.431A Laceration of bronchus, unilateral, initial encounter