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Evidence checklist

Deep Vein Thrombosis Residuals (Post-Thrombotic Syndrome)

DC 712138 CFR § 4.104Cardiovascular

Evidence strength

Mark what you already have below and your evidence strength appears here.

Target
Saved locally
01

Specialist opinion

Highest value0 of 2 collected
Venous duplex ultrasound documenting residual thrombosis or chronic changesCritical

Duplex Doppler ultrasound confirming residual deep vein thrombosis, chronic venous occlusion, or post-thrombotic changes (reflux, valve incompetence). This is the primary objective study.

Private provider · independent opinion
Nexus opinion linking DVT to service ("at least as likely as not")Critical

A medical opinion connecting DVT to immobilization during service, in-flight blood clot (long deployments), surgery during service, or other service-related prothrombotic factor.

Private provider · independent opinion
02

Treatment records

0 of 3 collected
Records of original DVT diagnosis (acute event)Critical

Medical records documenting the original DVT event — imaging confirmation, treatment initiated, and hospital or ER records. Establishes the causal chain.

VA or private records · written request
Anticoagulation therapy records

Records of anticoagulant treatment (warfarin, heparin, direct oral anticoagulants), INR monitoring, and duration of therapy.

VA or private records · written request
Compression stocking prescription

Documentation of prescribed compression stockings for post-thrombotic syndrome management.

VA or private records · written request
03

Lay statements

0 of 2 collected
Documentation of post-thrombotic syndrome symptoms

Records or personal statement documenting chronic leg swelling, pain, skin changes, and venous claudication resulting from the DVT — these drive the residual rating.

You or a witness · VA Form 21-4138 or 21-10210How to get this →
Buddy statement from spouse, family, or fellow service member

A written statement from someone who can describe observable symptoms and how your condition affects daily life.

You or a witness · VA Form 21-4138 or 21-10210How to get this →
04

Benefits questionnaire

0 of 1 collected
Completed DBQ Artery and Vein ConditionsCritical

Standardized form capturing venous duplex findings, edema measurements, skin changes, and functional limitations from DVT residuals.

Provider-completed · VA DBQ formHow to get this →
05

Service records

0 of 1 collected
Service treatment records (STRs)Critical

Military medical records showing in-service treatment, complaints, or injuries related to this condition.

NPRC / milConnect · SF-180
Condition guideRating criteria and what VA looks forBuddy statement builderGuided VA Form 21-10210

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