DC 7718Hematologic38 CFR § 4.117Last verified: APR 8, 2026

Essential thrombocythemia and primary myelofibrosis — VA Rating Criteria (38 CFR DC 7718)

The VA rates Essential thrombocythemia and primary myelofibrosis under 38 CFR 38 CFR § 4.117, Diagnostic Code 7718, from 0% to 100% based on the frequency and functional severity of symptoms. The maximum 100% rating requires Requiring either continuous myelosuppressive therapy, or, for six months following hospital admission for any of the following treatments: peripheral blood or bone marrow stem cell transplant, or chem…. Related conditions in the Hematologic body system share this rating framework.

What are the VA rating criteria for Essential thrombocythemia and primary myelofibrosis?

0%Disability Rating

Asymptomatic

30%Disability Rating

Requiring continuous or intermittent myelosuppressive therapy, or chemotherapy, or interferon treatment to maintain platelet count of 200,000-400,000, or white blood cell (WBC) count of 4,000-10,000

70%Disability Rating

Requiring continuous or intermittent myelosuppressive therapy, or chemotherapy, or interferon treatment to maintain platelet count <500 &#xD7; 10/L 9

100%Disability Rating

Requiring either continuous myelosuppressive therapy, or, for six months following hospital admission for any of the following treatments: peripheral blood or bone marrow stem cell transplant, or chemotherapy, or interferon treatment

Requiring continuous or intermittent myelosuppressive therapy, or chemotherapy, or interferon treatment to maintain platelet count <500 &#xD7; 10/L 9
— 38 CFR 38 CFR § 4.117, Diagnostic Code 7718 (70% tier)

Common Questions About Essential thrombocythemia and primary myelofibrosis VA Ratings

What is the VA disability rating for Essential thrombocythemia and primary myelofibrosis?

The VA rates Essential thrombocythemia and primary myelofibrosis under Diagnostic Code 7718 at the following tiers: 0%, 30%, 70%, 100%. The minimum 0% rating requires: Asymptomatic. The maximum 100% rating requires: Requiring either continuous myelosuppressive therapy, or, for six months following hospital admission for any of the following treatments: peripheral blood or bone marrow stem cell transplant, or chemotherapy, or interferon treatment.

What is Diagnostic Code 7718?

Diagnostic Code 7718 is the VA rating identifier for Essential thrombocythemia and primary myelofibrosis within 38 CFR 38 CFR § 4.117. It defines the specific symptom criteria and percentage thresholds a VA adjudicator uses to assign a disability rating. The diagnostic code is listed on a veteran's rating decision letter.

What is the highest rating for Essential thrombocythemia and primary myelofibrosis?

The highest schedular rating for Essential thrombocythemia and primary myelofibrosis under DC 7718 is 100%. This tier requires: Requiring either continuous myelosuppressive therapy, or, for six months following hospital admission for any of the following treatments: peripheral blood or bone marrow stem cell transplant, or chemotherapy, or interferon treatment. Veterans who cannot secure substantially gainful employment due to Essential thrombocythemia and primary myelofibrosis alone or in combination with other service-connected conditions may also qualify for TDIU at the 100% compensation rate under 38 CFR § 4.16.

What 38 CFR section governs Essential thrombocythemia and primary myelofibrosis ratings?

Essential thrombocythemia and primary myelofibrosis is rated under 38 CFR 38 CFR § 4.117, Diagnostic Code 7718. This section is part of the Schedule for Rating Disabilities (38 CFR Part 4) and can be read in full at the eCFR website.

Which conditions are commonly secondary to Essential thrombocythemia and primary myelofibrosis?

Secondary conditions caused or aggravated by Essential thrombocythemia and primary myelofibrosis may be ratable under 38 CFR § 3.310. Veterans should work with a VSO or accredited claims agent to document the medical relationship.

What evidence do I need to establish service connection for Essential thrombocythemia and primary myelofibrosis?

Service connection for Essential thrombocythemia and primary myelofibrosis requires three elements: (1) a current diagnosis of the condition, (2) an in-service event, injury, or disease that may have caused or aggravated it, and (3) a medical nexus connecting the current diagnosis to that in-service event. A nexus letter from a treating physician or independent medical examiner is the most reliable nexus evidence. C&P exam findings can also establish nexus if adequately documented.

Get a Personalized Rating Analysis

VeteranHQ evaluates your symptoms against the exact 38 CFR criteria, identifies secondary conditions, and shows what evidence you need to support a higher rating.

Discover Your Benefits