Your first step for pectus excavatum is usually your primary care doctor or pediatrician, who can assess the severity and refer you to the right specialist. For most people, the key specialist is a thoracic surgeon or pediatric surgeon with experience in chest wall repair. But depending on your symptoms, you may also need a cardiologist, pulmonologist, or radiologist before any surgical decision is made.
Start With Your Primary Care Doctor
A primary care physician or pediatrician is typically the first person to evaluate a sunken chest. They’ll look at how deep the indentation is, ask about symptoms like shortness of breath or chest pain, and decide whether you need specialist referrals. Mild cases without symptoms often just need periodic monitoring. If the dip in your chest is getting deeper over time, if you’re having trouble keeping up during exercise, or if you’re experiencing a racing heartbeat, dizziness, or frequent respiratory infections, that’s when your doctor will send you further down the specialist path.
Symptoms tend to worsen during the teenage growth spurt, so a child who was being monitored may need re-evaluation around puberty.
The Surgeon Who Fixes It
The specialist most directly responsible for treating pectus excavatum is a thoracic surgeon (for adults) or a pediatric surgeon (for children and teens). Look specifically for one who regularly performs chest wall repairs, not just any general surgeon. The most common procedure today is a minimally invasive repair where a curved metal bar is placed behind the breastbone to push it outward. The bar stays in for a few years, then gets removed in a shorter follow-up procedure.
For children and teens, many surgical centers prefer to operate between ages 12 and 15. At that age the chest wall is still flexible enough for a good correction, recovery is fast, and the bar can stay in place through the peak of the growth spurt, lowering the chance of recurrence. That said, younger children with severe deformities can be repaired earlier, and adults well into their 40s and 50s are now being successfully treated. The procedure is essentially the same across age groups, though adults sometimes need two bars instead of one and may require more involved stabilization because the chest wall is stiffer.
If you also have significant scoliosis, surgeons generally recommend correcting the spine first and waiting about six months before addressing the chest wall.
Why You May Need a Cardiologist
A deep pectus excavatum can physically compress the heart, particularly the right ventricle. Before surgery is considered, you’ll likely be sent for an echocardiogram, an ultrasound of the heart. The cardiologist is looking for signs that the sunken breastbone is pressing against the heart and restricting how well it fills or pumps blood. This evaluation isn’t just diagnostic; it’s one of the criteria insurance companies use to determine whether surgery is medically necessary.
The Role of a Pulmonologist
A pulmonologist measures how well your lungs are working through pulmonary function tests, most commonly spirometry. In a study of 152 pectus excavatum patients with an average age of 15, measured lung capacity was only 78% of predicted values before surgery. The breathing pattern looked restrictive, meaning the lungs couldn’t fully expand because the chest wall was physically in the way.
Severity matters here. Patients with a very deep deformity (a Haller index above 7) were four times more likely to show a restrictive breathing pattern on testing compared to those with a less severe indentation. If your pulmonary function tests confirm at least moderately severe restrictive lung disease, that finding strengthens the case for surgical repair and helps with insurance approval.
Imaging and the Haller Index
A radiologist plays a behind-the-scenes but essential role. A CT scan or MRI of your chest is used to calculate something called the Haller index, which is the standard measurement of how severe the deformity is. It’s calculated by dividing the widest internal width of your chest by the shortest distance between your breastbone and spine. A normal chest has an index around 2.5. Values above 3.2 are considered candidates for surgical correction, and anything above 3.5 is classified as severe.
CT has traditionally been the go-to imaging method, but because pectus excavatum patients are often young and radiation exposure is a concern, some centers have switched to MRI. A fast MRI sequence can capture the necessary measurements in under five minutes without any radiation, no breath-holding required. The images are clear enough to measure the Haller index the same way a CT scan would.
Non-Surgical Specialists
Not every case of pectus excavatum requires surgery. For mild to moderate cases, vacuum bell therapy is a non-surgical option. This involves placing a suction cup device over the chest to gradually lift the breastbone over time. It’s typically overseen by a nurse practitioner or surgeon within a dedicated chest wall treatment program rather than by a separate specialist. If you’re interested in this approach, look for a hospital with a formal pectus program, as they’re most likely to offer it and monitor your progress properly.
Dedicated Pectus Programs
Major medical centers increasingly have multidisciplinary pectus programs that bundle all the specialists you’d need into one coordinated team. Stanford’s Adult Pectus Program, for example, includes thoracic surgeons, a chest radiologist, a cardiologist, a pulmonologist, nurse practitioners, physical therapists, and social workers. Having all of these specialists under one roof simplifies the process considerably. Instead of independently tracking down a cardiologist for an echo, a pulmonologist for breathing tests, and a radiologist for imaging, the program coordinates everything.
If you’re near a children’s hospital or academic medical center, search their website for “pectus program” or “chest wall program.” These centers see high volumes of pectus patients, which generally translates to better outcomes and a smoother experience navigating insurance requirements.
What Insurance Typically Requires
Insurance companies generally classify pectus excavatum repair as a procedure requiring prior authorization. Cosmetic concern alone usually isn’t enough for approval. To meet medical necessity criteria, you typically need a Haller index greater than 3.25 plus at least one of the following: pulmonary function tests showing moderately severe restrictive lung disease, an echocardiogram showing the heart is being compressed, abnormal results on cardiopulmonary exercise testing, or documented progression of the deformity with physical symptoms beyond body image concerns.
This is why the cardiologist, pulmonologist, and imaging visits matter so much. Each one generates a piece of documentation your surgeon will use to build the case for coverage. If you skip these evaluations, you may end up paying out of pocket for a procedure that could have been covered.