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ICD-10-CM 2027

ICD-10 code for traumatic hemothorax

S27.1

Traumatic hemothorax

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Hemothorax (bacterial) (nontuberculous) › traumatic”. Page updated September 29, 2026.

About coding traumatic hemothorax

The ICD-10-CM code for traumatic hemothorax is S27.1 (Traumatic hemothorax). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on S27.1.

Within S27 (injury of other and unspecified intrathoracic organs), S27.1 is specifically for traumatic hemothorax. Related codes cover traumatic pneumothorax (S27.0), 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), injury of other specified intrathoracic organs (S27.8) and injury of unspecified intrathoracic organ (S27.9).

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 traumatic hemothorax codes (official index)

  • with pneumothorax S27.2 — Traumatic hemopneumothorax

Common questions about traumatic hemothorax ICD-10 codes

What is the ICD-10 code for traumatic hemothorax?

S27.1 — Traumatic hemothorax (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S27.2.

Is S27.1 billable?

No. S27.1 is a header code. Report one of its more specific subcodes instead.