G11.4 vs G80
G11.4 and G80 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 G80
hereditary spastic paraplegia (G11.4)
G11.4
Hereditary spastic paraplegia
Billable
- Chapter 6
- Diseases of the nervous system
- Section
- G10-G14
Indexed under
- Ataxia, ataxy, ataxic › spastic hereditary
- Paraplegia › familial spastic (lower)
- Paraplegia › hereditary, spastic (lower)
- Ataxia, ataxy, ataxic › hereditary › spastic
- Paralysis, paralytic › familial › spastic (complete) (incomplete)
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