Personal history of malignant neoplasm of unsp resp organ

This code indicates that a patient has a past medical history of a malignant tumor that originated in an unknown or unspecified part of the respiratory system. The malignancy is no longer present, and the patient is not currently receiving treatment for it. This code signifies a history of cancer, not an active disease.

Use this code when documenting a patient's history of a respiratory malignancy where the specific primary site within the respiratory system is not documented or is unknown. This is often seen in cases where the patient was treated elsewhere, and detailed records are unavailable, or when the original tumor site was never definitively identified. It's appropriate for follow-up visits after successful treatment.

• Do not use this code if the primary site of the respiratory malignancy is known and documented (e.g., lung, bronchus, larynx).
• This code is for a personal history and should not be used for active malignancy or for screening purposes without a history of cancer.
• Always sequence this code as a secondary diagnosis, as it represents a historical condition impacting future care.