Answer: Code 30140 (Submucous resection inferior turbinate, partial or complete, any method) specifies excision of bone. Because of this, you must have documentation that the surgeon cut the mucosa to get to the bone and remove it, preserving the mucosa. Think of it like removing a finger from a glove.
If the surgeon removed the mucosa and bone together, however, the correct code would be 30130 (Excision inferior turbinate, partial or complete, any method).