Z83.42
✓ Billable
Family history of familial hypercholesterolemia
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z83.42
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Z83.42?
ICD-10-CM code Z83.42 represents Family history of familial hypercholesterolemia. It is a billable diagnosis code in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z83.42 billable?
Yes. Z83.42 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is Z83.42 in?
Z83.42 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
How do I search for an ICD-10 code for family history of a condition?
If you are looking for a code documenting a patient's family history of a condition (not their own past diagnosis), Z83.42 (Family history of familial hypercholesterolemia) is in the correct Z80–Z84 family-history block. Family history codes are reported when a blood relative has had the condition, not the patient themselves.
Related codes in the Z83 category
Z83
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Z83.4
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