Oth forn obj in resp tract, part unsp in cause asphyx, sqla

This code signifies a long-term or residual effect from a foreign object previously lodged in an unspecified part of the respiratory tract, which led to asphyxiation. The initial acute event has resolved, but the patient continues to experience health problems directly attributable to that past incident.

Use this code when documenting conditions like chronic lung damage, persistent respiratory compromise, or other lasting sequelae directly linked to a past episode of foreign body aspiration into the respiratory tract that caused asphyxiation. This code is appropriate for follow-up encounters after the acute phase of the foreign body removal and initial treatment.

• Requires a seventh character "S" to indicate sequela, meaning the residual effect of a past injury.
• Do not use for the initial acute foreign body aspiration; instead, use the appropriate acute T17 code.
• Always code the specific sequela (e.g., chronic bronchitis, lung fibrosis) first, followed by this code to indicate the cause.