ICD-10 A98.5
Billable / Specific CCHemorrhagic fever with renal syndrome
About ICD-10-CM A98.5
ICD-10-CM code A98.5 represents Hemorrhagic fever with renal syndrome. This is a billable/specific code in the Infectious and Parasitic Diseases chapter (block A98). The 2026 edition of ICD-10-CM A98.5 became effective on October 1, 2025.
Coding Tips for A98.5
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
A98.5 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under A98.5. Per CMS ICD-10-CM Tabular 2026.
- Epidemic hemorrhagic fever
- Korean hemorrhagic fever
- Russian hemorrhagic fever
- Hantaan virus disease
- Hantavirus disease with renal manifestations
- Nephropathia epidemica
- Songo fever
Type 1 Excludes
Pure excludes, these codes can never be coded together with A98.5. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- hantavirus (cardio)-pulmonary syndrome (B33.4)
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Inpatient DRG Impact, CC
codes Hemorrhagic fever with renal syndrome. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for A98.5
Local Coverage Determinations (LCDs) from CMS MACs that list A98.5 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing A98.5.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but A98.5 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with A98.5
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert A98.5 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| A98.5 | 0786 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To A98.5
Other codes in section A90-A99 (Arthropod-borne viral fevers and viral hemorrhagic fevers).
ICD-10 A98.5, Billing FAQ
Is ICD-10 code A98.5 billable? +
Yes, A98.5 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to A98.5? +
ICD-10 A98.5 includes: Epidemic hemorrhagic fever; Korean hemorrhagic fever; Russian hemorrhagic fever, and 4 more clinical synonyms.
What codes are Type 1 Excludes for A98.5? +
Type 1 Excludes (never code together with A98.5): hantavirus (cardio)-pulmonary syndrome (B33.4)
Is A98.5 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What ICD-9 codes does A98.5 map to? +
Per CMS GEMs, A98.5 maps to ICD-9 codes: 0786. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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