This is difficult information to obtain.
I doubt you will get a general answer.
Which type of lung cancer - small cell or non-small cell ?
Surgery is used for "non-small cell types" but not for small cells types.
Of course surgery adds greatly to the overall expense - tens of thousands of dollars.
The stage of the lung cancer matters too.
Is radiation therapy involved? That is tens of thousands of dollars.
If chemotherapy is involved - the expense varies greatly depending on which of the many chemotherapy agents /regimens are used.
Some of the new ones are very expensive.
More tens of thousand of dollars.
Costs have been escalating astronomically in the past ten years since I retired from cancer medicine.
Pharmaceutical company charges have become out of this world for the newer chemotherapy agents.
Greed seems to be rampant at the corporate level.
- - -
If I had to guess - and this is based on what I have learned from "Dave" on this site - the current cost would be somewhere between $100,000 and $200,000 - or could be higher.
The sad part is, we only cure one person in seven (~15%) who has a primary lung carcinoma in the USA despite all of this expense.
Much better to prevent them.
If people would not smoke cigarettes, about 90% of lung carcinomas could be avoided in the first place.
Lung cancers from cigarette smoking cause over 31% of all cancer deaths in the U.S. - and they could have been prevented.