ICD-10 · PDGM grouping
J17 Pneumonia in diseases classified elsewhere
The one code in the J17 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
1
Can lead a claim
0
Cannot lead a claim
1
What CMS assigns to J17
This code is assigned no clinical group. It counts toward the Whooping Cough and Pneumonia comorbidity subgroup. It cannot lead a claim. CMS attaches a code-first note to it.
- Whooping Cough and Pneumonia: counts toward the high comorbidity tier only in an interaction pair.
Code first
CMS grouper convention 84. Code first:
- Q fever (A78)
- rheumatic fever (I00)
- schistosomiasis (B65.0-B65.9)
- underlying disease, such as:
The J17 code
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 |
|---|---|---|---|---|
| J17 | Pneumonia in diseases classified elsewhere | Cannot lead a claimManifestation code is not reportable as principal diagnosis | None | Whooping Cough and Pneumonia |
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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