External constriction of right back wall of thorax, subs

This code signifies an injury to the right posterior thoracic region caused by external pressure or compression. It indicates that the patient is in the healing phase of this injury, beyond the initial acute treatment. The "subsequent encounter" designation means the patient is receiving follow-up care for a previously diagnosed and treated constriction injury.

This code is appropriate for documenting follow-up visits for patients recovering from injuries like seatbelt syndrome, being pinned against a wall, or other mechanisms causing external compression to the right back of the chest. It applies when the patient is no longer in the initial phase of injury but is still receiving care related to the healing process, such as wound care, pain management, or physical therapy.

• Ensure the documentation clearly specifies the "right back wall of thorax" as the anatomical site of the external constriction.
• Verify that the encounter is indeed "subsequent" and not an initial encounter for the injury; otherwise, a different seventh character would be required.
• Always code the underlying cause of the external constriction (e.g., fall, motor vehicle accident) with an external cause code.