How long after quitting does lung screening qualify?

Question

Hello doctor,

I am writing about my mother, who is 67 years old. She quit smoking about 14 months ago after smoking a pack a day for nearly 35 years. She is on insurance, and we are trying to figure out if she can still get screened for lung cancer because we know the risk does not just disappear after quitting. She has a history of mild emphysema, and her pulmonologist mentioned a low-dose CT scan screening some time back, but we never followed up on it properly.

Now she has been having a dry, persistent cough for the past 6 weeks, and she is also complaining of some upper back discomfort, which she has never had before. Her last spirometry showed an FEV1 of around 68 percent, which her doctor said indicated moderate obstruction. She takes a Fluticasone and Salmeterol combination inhaler daily. We are worried that if lung cancer screening is not covered because she already quit, then we might miss something important.

Does insurance actually cover low-dose CT screening for lung cancer for someone who quit over a year ago but smoked heavily for decades?
Is there a time limit after quitting when the coverage stops?

Her primary doctor has not given us a clear answer yet, and we are really confused about what steps to take next.

Please help.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

First, I want to say it is very understandable that you are worried about your mother. When someone has a long smoking history and starts having a persistent cough or new discomfort, it is natural to feel anxious and want clear answers. It is also great that she quit smoking 14 months ago. That is one of the most important steps anyone can take for lung health, even after decades of smoking.

Regarding screening, insurance does cover annual screening for lung cancer using a low-dose CT scan, but there are specific criteria. In general, insurance Part B covers the screening if a person:

If he is aged 50 to 77.
Has at least a 20 pack-year smoking history.
Currently smokes or quit within the last 15 years.
Has no symptoms suggesting lung cancer.
Gets an order from their doctor after a shared decision-making visit.

Based on what you described, your mother likely still qualifies from the smoking perspective. She smoked about a pack a day for 35 years, which is around 35 pack years, and she only quit 14 months ago. That is well within the 15-year window after quitting that is required for coverage. Quitting recently does not disqualify her at all. In fact, people remain eligible for screening for up to 15 years after they stop smoking.

However, there is one important nuance. The insurance screening program is intended for people without symptoms. Because your mother has had a persistent cough for six weeks and new back discomfort, her doctor may order a diagnostic chest CT (computerized tomography) rather than a screening CT. In many cases, this is actually more appropriate medically because diagnostic imaging is used when symptoms are present.

Insurance typically covers diagnostic scans as well, although cost-sharing rules may differ from those for preventive screening. Her history of mild emphysema and the inhaler containing Fluticasone and Salmeterol suggests that she likely has some form of chronic lung disease, often related to long-term smoking, such as chronic obstructive pulmonary disease (COPD). COPD can cause cough and chest or back discomfort. However, because of her smoking history, doctors usually take new or persistent symptoms seriously and investigate them.

I hope this helps.

Kindly follow up if you have more concerns.

Thank you.