ICD-10 Codes for Family History of Diabetes and Hypertension
For a patient with a family history of diabetes, use ICD-10 code Z83.3, and for a family history of hypertension, use ICD-10 code Z82.49.
Specific ICD-10 Coding
Family History of Diabetes
- Z83.3 is the appropriate code for family history of diabetes mellitus 1
- This code should be documented when family history of diabetes is a relevant risk factor in the patient's evaluation 1
Family History of Hypertension
- Z82.49 is the appropriate code for family history of ischemic heart disease and other diseases of the circulatory system, which includes hypertension 1
- Obtaining a family history is recommended to investigate familial predisposition to hypertension and cardiovascular diseases 1
Clinical Significance of Documentation
Why Family History Matters
- Family history of hypertension is a major risk factor for elevated blood pressure in childhood and represents a significant component of cardiovascular risk assessment 1
- A positive family history is a frequent feature in hypertensive patients, with heritability estimated to vary between 35% and 50% 1
- Family history of both diabetes and hypertension substantially increases the risk of primary hypertension and cardiovascular disease 2, 3
Documentation Requirements
- Family history should be obtained as part of comprehensive medical history in all patients with hypertension or diabetes 1
- Periodic reassessment of family history is necessary, particularly in younger patients whose parents may develop these conditions over time 1
- Family history documentation helps differentiate primary from secondary causes of hypertension and guides risk stratification 1
Common Pitfalls to Avoid
- Do not confuse personal history codes with family history codes - Personal diagnosis of diabetes uses E10-E13 series codes, while family history uses Z83.3 4
- Do not use Z82.49 for personal hypertension - Active hypertension requires I10-I16 series codes, not family history codes 5
- Document both codes separately when both family histories are present - each condition warrants its own Z-code 1