Family History

Include realistic condition codes (SNOMED CT / ICD-10):

• Cardiovascular: Coronary artery disease (53741008), Hypertension (38341003), Stroke (230690007), Cardiomyopathy (85898001).
• Oncology: Breast cancer (254837009), Colon cancer (93761005), Prostate cancer (399068003), Lung cancer (93880001), Ovarian cancer (363443007), Melanoma (372244006).
• Metabolic: Type 2 diabetes (44054006), Hyperlipidemia (55822004), Obesity (414916001).
• Neurological: Alzheimer's (26929004), Parkinson's (49049000), Huntington's (58756001), Epilepsy (84757009).
• Genetic syndromes: BRCA1/BRCA2 positive (412734009), Lynch syndrome (315058005), Sickle cell trait (16402000), Cystic fibrosis carrier (401150006), Hemophilia carrier (50536004).
• Mental health: Major depression (73867007), Bipolar disorder (13746004), Schizophrenia (58214004), Alcohol use disorder (7200002).
• Autoimmune: Rheumatoid arthritis (69896004), Lupus (55464009), Type 1 diabetes (46635009), Celiac disease (396331005).

Status

• partial, completed, entered-in-error, health-unknown.
• Use health-unknown for adopted patients or unknown family members.

Age and Deceased

• age: Use Age data type (e.g., onset at age 55) or ageRange.
• deceasedBoolean / deceasedAge / deceasedDate: Include for deceased relatives. Common pattern: father deceased at age 62 from MI.
• bornDate: Include approximate birth year when relevant.

Clinical Patterns

• Three-generation history: Include parents + grandparents + siblings minimum.
• Cancer clustering: Multiple first-degree relatives with same cancer type → suggest genetic testing referral.
• Cardiovascular family: Father MI at 55, paternal grandfather stroke at 60, brother hypertension at 40.
• Diabetes family: Mother T2DM, maternal grandmother T2DM, sibling pre-diabetes.
• Unknown history: Adopted patients — use status "health-unknown".

References

• FamilyMemberHistory.patient → Reference(Patient/{id}) — required.
• FamilyMemberHistory.reasonReference → Reference(Condition/{id}) — why documented.