AIR FORCE · JOB CODE 4T0X1
Medical Laboratory Your military role & VA condition guide
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This guide brings together conditions associated with 4T0X1 (Medical Laboratory). Start with a topic that relates to your experience, then follow its guide for more detail.
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Conditions are grouped by occupational exposures and physical demands. These are research connections, not statistics about claim frequency or approval.
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Conditions to explore.
Choose a body system, search for a condition, or open a preview. Each full guide explains its rating criteria and evidence in more detail.
8 of 8 conditions
Chronic Laryngitis
DC 6516 has two evaluations, 30 and 10 percent, and hoarseness is in both of them. What separates the tiers is not how bad the hoarseness sounds but what an examination of the larynx finds underneath it: inflammation of the cords or mucous membrane is the 10 percent criterion, while thickening or nodules of the cords, polyps, submucous infiltration, or pre-malignant changes on biopsy is the 30 percent one. So a claim under this code turns on a finding that has to be seen and written down, not on a description of the voice.
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Evidence covered in the guide
- An examination that looked at the larynx and described the cords. The 30 percent criterion is made of findings — thickening, nodules, polyps, submucous infiltration — that exist only if somebody visualized the cords and wrote down what was there.
- The biopsy report, if one was taken. Pre-malignant changes on biopsy is the fifth route to 30 percent and the only one that is a laboratory result rather than an observation.
- Records showing the hoarseness is chronic rather than an episode. Both tiers of DC 6516 require hoarseness, and the code is titled chronic laryngitis, so a single acute illness is not what it grades.
Dermatitis or Eczema
A chronic skin condition causing rashes, redness, itching, or flaking, often worsened by allergens or stress.
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Evidence covered in the guide
- Dermatology records with area measurement (percentage of body affected)
- Photos showing visible skin lesions
- Medication history (topical or oral corticosteroids, immunosuppressants)
Post-Traumatic Stress Disorder (PTSD)
PTSD is a mental health issue caused by a traumatic event, leading to flashbacks, anxiety, or nightmares.
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Evidence covered in the guide
- Formal PTSD diagnosis from a VA or private psychiatrist
- C&P exam results showing PTSD symptoms
- Buddy statements confirming trauma or symptoms
Sleep Apnea Syndromes
Sleep apnea is a disorder where breathing repeatedly stops or becomes shallow during sleep, fragmenting rest and often leading to loud snoring, daytime fatigue, and difficulty concentrating. Left untreated, it's also linked to higher blood pressure and heart strain, which is part of why the VA rates it based on treatment need rather than just the diagnosis.
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Evidence covered in the guide
- A polysomnography (sleep study) confirming the diagnosis - this is the evidence the rating schedule specifically requires.
- A CPAP prescription along with compliance or usage reports, since device use is what supports the 50% tier.
- Medical notes describing sleep-related symptoms like loud snoring, witnessed breathing pauses, or excessive daytime sleepiness.
Hypertension
Hypertension is chronically elevated blood pressure that, left unmanaged, raises the risk of heart attack, stroke, and kidney disease. It's one of the most common VA claims, both filed directly and as a PACT Act presumptive condition for many Vietnam-era veterans exposed to Agent Orange.
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Evidence covered in the guide
- Blood pressure readings from primary care visits across multiple dates - this is the core evidence the rating schedule requires.
- VA Compensation & Pension exam results, where the examiner takes their own set of readings.
- A treatment and medication history showing what's been prescribed and how consistently blood pressure has stayed elevated despite treatment.
Tenosynovitis
Tenosynovitis is inflammation of the sheath that surrounds a tendon, causing pain, swelling and catching on movement. Since February 7, 2021 DC 5024 has covered a wider family — the schedule titles it "Tenosynovitis, tendinitis, tendinosis or tendinopathy", so rotator cuff tendinitis, De Quervain's tenosynovitis, lateral epicondylitis, Achilles tendinopathy and trigger finger are all rated here. The code has no percentages of its own: it is rated as degenerative arthritis, on limitation of motion of the affected part.
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Evidence covered in the guide
- Goniometer range-of-motion measurements, in degrees, for the joint the affected tendon crosses — this is the only thing DC 5024 rates.
- Examination findings recording objective painful motion, localized swelling along the tendon, or crepitus, which is the confirmation DC 5003 requires before the per-joint 10 percent can be assigned.
- Ultrasound or MRI showing tendon sheath thickening, tendinosis or a partial tear, plus injection, splinting, physical therapy or release-surgery records.
Gastroesophageal Reflux Disease (GERD)
GERD is stomach acid and stomach contents flowing back up into the esophagus, causing heartburn, regurgitation and chest discomfort. DC 7206 has its own criteria table, and what that table measures is not how often heartburn occurs — every step is written around a documented esophageal stricture causing dysphagia (difficulty swallowing) and the treatment that stricture requires. Note (1) requires the findings to be documented by barium swallow, computerized tomography, or esophagogastroduodenoscopy.
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Evidence covered in the guide
- A barium swallow, computerized tomography, or esophagogastroduodenoscopy report confirming the stricture — Note (1) names these three studies specifically.
- Dated procedure records for every dilatation, including any performed using steroids, plus placement or operative reports for an esophageal stent, surgical correction, or a percutaneous esophago-gastrointestinal tube (PEG tube).
- Prescription records showing daily medication taken to control dysphagia, which is what the 10 percent row is written around.
Bursitis
Bursitis is inflammation of a bursa — one of the fluid-filled sacs that cushion tendons and muscles where they pass over bone — most often at the shoulder, hip, elbow or knee, causing pain and painful, restricted motion. DC 5019 has no percentages of its own: it is rated as degenerative arthritis, on limitation of motion of the affected joint.
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Evidence covered in the guide
- Goniometer range-of-motion measurements, in degrees, for the affected joint — this is the only thing DC 5019 rates, and a compensable evaluation depends on comparing it against that joint's own diagnostic code.
- Examination findings recording objective painful motion, swelling or muscle spasm, which is the confirmation DC 5003 requires before the per-joint 10 percent can be assigned.
- Imaging (ultrasound or MRI) showing bursal thickening or effusion, and any aspiration or injection records, which establish the diagnosis.
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A FEW HELPFUL ANSWERS
Questions about the 4T0X1 guide
What do the conditions in this guide represent?
They are conditions grouped with 4T0X1 (Medical Laboratory) by the role’s occupational exposures and physical demands. Use them as a starting point for research. The list does not rank conditions by claim frequency or VA approval rates.
Where can I find rating levels and evidence guidance?
Open a condition preview for a quick look, or follow its guide link for the published rating criteria, an evidence checklist, and available exam guidance.
What if I served in more than one role?
You can explore a guide for each of your military jobs. Use the military job directory to search another code, job title, or branch, and keep notes on the experiences you want to discuss.
What if my condition is not listed here?
This is a curated starting point. The condition library has additional guides you can search by name, body system, or diagnostic code.
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