ICD-10 · PDGM grouping
J09 Influenza due to certain identified influenza viruses
All 4 codes in the J09 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
4
Can lead a claim
4
Cannot lead a claim
0
What CMS assigns to J09
All 4 codes group to MMTA - Respiratory. All 4 count toward the Influenza comorbidity subgroup. Every code can lead a claim.
- Influenza
Every code in J09
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| J09.X Influenza due to identified novel influenza A virus | ||||
| J09.X1 | Influenza due to identified novel influenza A virus with pneumoniaCMS: Influenza due to ident novel influenza A virus w pneumonia | Can lead a claim | L | Influenza |
| J09.X2 | Influenza due to identified novel influenza A virus with other respiratory manifestationsCMS: Flu due to ident novel influenza A virus w oth resp manifest | Can lead a claim | L | Influenza |
| J09.X3 | Influenza due to identified novel influenza A virus with gastrointestinal manifestationsCMS: Influenza due to ident novel influenza A virus w GI manifest | Can lead a claim | L | Influenza |
| J09.X9 | Influenza due to identified novel influenza A virus with other manifestationsCMS: Flu due to ident novel influenza A virus w oth manifest | Can lead a claim | L | Influenza |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
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