Family medical history is a record of health facts you know or can verify about relatives. A useful organizer records the same details for each entry: the relationship, the known fact, when it happened or about how old the person was, where the information came from, how certain it is, and when you last updated it. Use it as a summary of known family facts, not as a risk calculator and not as a copy of someone else’s full medical record. The CDC’s family health history guidance and My Family Health Portrait both focus on collecting family health information, updating it over time, and sharing it with your own clinician.

Start with family history, not someone else’s chart

A family medical history is a summary of health facts you know, were told, or were able to verify about relatives. By contrast, MedlinePlus describes a personal health record as a tool for organizing your own health information.

Keep these categories separate:

• Family history: information you know or can verify about relatives
• Your personal health record: information about your own health
• Another person’s medical record: that person’s record, which you should not assume you can access

Your organizer should preserve the fact, source, timing, and uncertainty instead of trying to recreate someone else’s chart.

Being a spouse, child, sibling, or caregiver does not automatically give you access to another person’s records. HHS guidance on personal representatives explains that authority depends on the situation and legal status, not the relationship alone. If you are organizing your own paperwork too, use our medical-record organization guide.

Use the same fields for every entry

The CDC’s family history tools focus on relatives, health conditions, age or timing details, updates, and sharing with a clinician (CDC tools and resources, My Family Health Portrait). These fields keep an organizer consistent:

Use a separate row for each fact that has a different time context or source.

Copy this blank organizer

Copy this compact entry block into a note, spreadsheet, or paper worksheet for each relative:

When you fill it in:

• Start with what you know or can verify
• Leave gaps as unknown instead of guessing
• Record approximate timing if exact dates are not available
• Add a source for every entry
• Update the last updated field when you learn something new

If you prefer paper, the CDC family health history resources and My Family Health Portrait include family-history tools you can print or share.

Which relatives to list first

If you are starting from scratch, begin with the relatives whose information you know, then add other relatives as facts become available. You can begin using the organizer before every branch is complete. Mark gaps as unknown rather than guessing.

For each person, note:

• the relationship
• which side of the family they are on
• the health fact
• age or time context
• source
• confidence label
• last updated date

If you do not know the family side, write unknown. If you are not sure a reported condition is accurate, keep the wording you were given and label the entry clearly.

Ask without pressuring people

Ask brief, respectful questions and make clear that a relative can decline.

Try this approach:

• Explain that you are collecting family health history for your own records and for discussion with your own clinician
• Ask for broad facts first, not a full life story
• Ask about when something happened if exact timing is not known
• Offer an easy way to say the answer is unknown or to decline the question
• Write down what was said without correcting or interpreting it

One option is to ask whether the person is comfortable sharing any major diagnoses or causes of death they know about, and about how old they were when those happened. If the answer is vague, keep it vague and label it that way.

Label what is unknown, approximate, or secondhand

An organizer is more useful when it shows uncertainty clearly.

Two rules help:

• Exact wording is better than guessed interpretation.
• A labeled unknown is better than an unlabeled assumption.

Keep source material separate

Your organizer is the summary. Keep source material separate so it is clear what came from a conversation, what came from a document, and what is still uncertain.

That usually means:

• keep the family-history table in one note, spreadsheet, or folder
• keep any separate document a relative chose to share with you in its own file or folder
• record a short source note in the organizer instead of copying full documents into every entry
• for a visit, prepare a short summary and keep the separate source material with your own files
• use a storage or sharing method you understand
• do not treat caregiving or family relationship alone as permission to access another person’s records

MedlinePlus describes personal health records as tools for organizing information for your own use. HHS guidance on personal representatives explains that access to another person’s record depends on legal authority, not relationship alone.

If your next step is organizing your own files alongside family-history notes, use our medical-record organization guide.

Bring a clean summary to your clinician

The point of organizing family history is to make it easier to discuss with your clinician. The CDC’s family history tools are built around updating, printing, and sharing this information for care discussions (CDC family health history guidance, My Family Health Portrait).

Bring:

• your current family-history organizer
• the date you last updated it
• short source notes that explain where facts came from
• only the separate documents a relative chose to share for that discussion, if needed
• a shorter summary of your own health history, if helpful, using our medical history summary template

Useful questions for your clinician include:

• Are there entries you want me to verify in more detail?
• Which relatives or timing details are most useful to track?
• How should I update this before future visits?
• How should this family history be considered alongside my own medical history?

Let your clinician interpret what any pattern may or may not mean for you.

Choose a digital organizer for the same job

A digital tool should help you do the same organizing work as the worksheet.

Look for a tool that can:

• capture relationship, family side, source, and last updated
• mark entries as unknown, approximate, secondhand, or disputed
• keep source material separate from the summary
• make it easy to update information over time
• help you print or share a clean summary for a visit

Those are the same kinds of organizing tasks reflected in CDC family health history resources and My Family Health Portrait.

Glass for Patients can hold health information you provide for your review. If you use it alongside this organizer, add only family-history facts you know or can verify and keep any relative’s source material separate.

Next steps

• Use the medical-record organization guide
• Turn your notes into a shorter visit handout with the medical history summary template
• Browse more patient resources
• Learn more about Glass for Patients

Patient Service eligibility and limits

Glass for Patients is available to adults age 18 or older who live in the United States or its territories and have, and intend to consult, their own physician or other licensed health care provider before acting on information received through the Patient Service.

Glass for Patients provides general health information and educational support. It does not provide medical advice, diagnosis, treatment, clinical recommendations, urgent triage, or a substitute for a licensed clinician. Review the current Terms of Service.