Question 1: Date of diagnosis of primary disease for infusion

Report the date of the first pathological diagnosis (e.g., bone marrow or tissue biopsy) of the disease or the date of molecular / genetic testing. Enter the date the sample was collected for examination. If the diagnosis was determined at an outside center, and no documentation of a pathological or laboratory assessment is available, the dictated date of diagnosis within a physician note may be reported. Do not report the date symptoms first appeared.

Enter the date the sample was collected for examination. If the diagnosis was determined at an outside center, and no documentation of a pathological or laboratory assessment is available, the dictated date of diagnosis within a physician note may be reported. Do not report the date symptoms first appeared.

Use the following guidelines if the recipient was diagnosed with a non-malignant disease:

  • Newborn screening: If the diagnosis was made using a newborn screening, report the date of birth as the diagnosis date.
  • Genetic testing: If the recipient was not diagnosed with a newborn screening, report the date of genetic testing that confirmed the diagnosis.
  • Other Definitive Assessment: If genetic testing was not completed, report the date of the other definitive assessment (i.e., electrophoresis, flow cytometry, etc.), that confirmed the diagnosis.
  • Diagnosis by exclusion: If the diagnosis was made by exclusion (i.e., all assessments returned normal and the diagnosis made clinically), report the date of the clinical diagnosis as documented by the physician.
  • Diagnosis at an outside center: If the diagnosis was completed at an outside center (the confirmatory test such as newborn screening, genetic testing, another definitive test, or clinical diagnosis) and the HCT / CT center performs their own confirmatory testing, report the date of the initial confirmatory test as the diagnosis date.
    • If the exact date is not known or documentation is limited, report an estimated date.

If the exact diagnosis date is not known, use the process described in General Instructions, Guidelines for Completing Forms.

Question 626: Specify other disease

Before using this category, check with a transplant physician to determine whether the disease can be classified as one of the listed options in the Disease Classification questions. An example of another disease is dystrophic epidermolysis bullosa (DEB).

Section Updates:

Question Number Date of Change Add/Remove/Modify Description Reasoning (If applicable)
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Last modified: Oct 27, 2025

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