A92.0 vs A98
A92.0 and A98 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 A98
chikungunya hemorrhagic fever (A92.0)
A92.0
Chikungunya virus disease
Billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- A90-A99
Use when the record says
- Chikungunya (hemorrhagic) fever
Indexed under
- Fever › Chikungunya (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
- Fever › hemorrhagicNOS › Chikungunya (inanition) (of unknown origin) (persistent) (with chills) (with rigor)
A98
Other viral hemorrhagic fevers, not elsewhere classified
Not billable
- Chapter 1
- Certain infectious and parasitic diseases
- Section
- A90-A99
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