S25.412 Minor laceration of left pulmonary blood vessels

ICD-10-CM S25.412: Minor laceration of left pulmonary blood vessels

ICD-10-CM code S25.412 designates a minor laceration of left pulmonary blood vessels. Clinical literature indicates that pulmonary lacerations from blunt or penetrating trauma can disrupt pulmonary vessels, causing bleeding into airways or the thoracic cavity. Coding references distinguish this left-sided diagnosis from right and unspecified vessel injuries and provide encounter modifiers for initial, subsequent, and sequela care. 1 3 4

Plain-language overview

A pulmonary laceration represents a structural injury to the lung that can result from either penetrating injuries or nonpenetrating blunt trauma to the chest. 1

As a result of a pulmonary laceration, circulating blood can pass into the airway and thoracic cavity, and the patient may experience hemorrhagic shock. 1

What this code represents

The ICD-10-CM code S25.412 specifically represents a minor laceration of the left pulmonary blood vessels, distinguishing this diagnosis from injuries to the right or unspecified pulmonary blood vessels. 3 4

Coding details

Coding references list S25.412A for an initial encounter and S25.412D for a subsequent encounter, providing specific characters for the phase of care. 4

The code S25.412S is listed to designate a minor laceration of left pulmonary blood vessels as a sequela, distinguishing late effects from active initial and subsequent encounters. 3 4

Documentation considerations

Clinical literature notes that computed tomography is useful for diagnosing pulmonary laceration associated with rib fractures, whereas a pulmonary laceration cannot be identified on chest X-ray pictures at first. 1 2

Documentation of hemothorax may be relevant context, as blunt trauma hemothorax is caused by injury to the intercostal vessels or interparenchymal pulmonary vessels due to rib fractures. 1

What the sources add

The clinical sources describe the traumatic mechanisms and severe bleeding risks of pulmonary lacerations, while the coding sources provide the specific administrative laterality and encounter designations for the S25.412 diagnosis. 1 4

The University of Michigan phecode reference and the Unbound Medicine ICD-10-CM reference both list S25.412 among minor pulmonary blood vessel lacerations, but the Unbound Medicine source explicitly details the initial, subsequent, and sequela encounter codes. 3 4

Sources

1. Blunt trauma related chest wall and pulmonary injuries: An overview — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
2. Pulmonary contusion — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. Phecode 1007 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-25.
4. ICD-10-CM 2024 | S25.41 - Minor laceration of pulmonary blood vessels — unboundmedicine.com; accessed 2026-07-25.