Z63.3 vs Z63.4
Z63.3 and Z63.4 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on Z63.3
absence of family member due to disappearance and death (Z63.4)
Z63.3
Absence of family member
Not billable
- Chapter 21
- Factors influencing health status and contact with health services
- Section
- Z55-Z65
Z63.4
Disappearance and death of family member
Billable
- Chapter 21
- Factors influencing health status and contact with health services
- Section
- Z55-Z65
Use when the record says
- Assumed death of family member
- Bereavement
Indexed under
- Bereavement (uncomplicated)
- Disappearance of family member
- Death › family member (cause unknown) (of) (unexplained) (unspecified cause)
- Loss › parent in childhood (of)
- Disruption › family › due to › bereavement (of)
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027