ICD-10 J09.X3
Billable / SpecificInfluenza due to identified novel influenza A virus with gastrointestinal manifestations
About ICD-10-CM J09.X3
ICD-10-CM code J09.X3 represents Influenza due to identified novel influenza A virus with gastrointestinal manifestations. This is a billable/specific code in the Respiratory System chapter (block J09). The 2026 edition of ICD-10-CM J09.X3 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under J09.X3. Per CMS ICD-10-CM Tabular 2026.
- Influenza due to identified novel influenza A virus gastroenteritis
Type 1 Excludes
Pure excludes, these codes can never be coded together with J09.X3. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- 'intestinal flu' [viral gastroenteritis] (A08.-)
Medicare LCD Coverage for J09.X3
Local Coverage Determinations (LCDs) from CMS MACs that list J09.X3 as a covered diagnosis.
Showing top 10 of 611 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing J09.X3.
5 Medicare
CPT Codes Commonly Billed with J09.X3
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 J09.X3 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 |
|---|---|---|
| J09.X3 | 48809 | 10000 |
| J09.X3 | 48889 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To J09.X3
Other codes in section J09-J18 (Influenza and pneumonia).
ICD-10 J09.X3, Billing FAQ
Is ICD-10 code J09.X3 billable? +
Yes, J09.X3 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 J09.X3? +
ICD-10 J09.X3 includes: Influenza due to identified novel influenza A virus gastroenteritis.
What codes are Type 1 Excludes for J09.X3? +
Type 1 Excludes (never code together with J09.X3): 'intestinal flu' [viral gastroenteritis] (A08.-)
What ICD-9 codes does J09.X3 map to? +
Per CMS GEMs, J09.X3 maps to ICD-9 codes: 48809, 48889. 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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