Z09 vs Z48
Z09 and Z48 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 Z48
encounter for follow-up examination after completed treatment (Z08-Z09)
Z09
Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Billable
- Chapter 21
- Factors influencing health status and contact with health services
- Section
- Z00-Z13
Use when the record says
- Medical surveillance following completed treatment
Indexed under
- Admission › follow-up examination (for)
- Examination › follow-up (for) (following) (general) (of) (routine)
- Examination › following › treatment (for) (following) (general) (of) (routine)
- Examination › follow-up › chemotherapy NEC (for) (following) (general) (of) (routine)
- Examination › follow-up › fracture (for) (following) (general) (of) (routine)
Z48
Encounter for other postprocedural aftercare
Not billable
- Chapter 21
- Factors influencing health status and contact with health services
- Section
- Z40-Z53
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