ICD-10 · PDGM grouping
J15 Bacterial pneumonia, not elsewhere classified
All 14 codes in the J15 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
14
Can lead a claim
14
Cannot lead a claim
0
What CMS assigns to J15
All 14 codes group to MMTA - Respiratory. All 14 count toward the Whooping Cough and Pneumonia comorbidity subgroup. Every code can lead a claim. CMS attaches a code-first note to all 14.
- Whooping Cough and Pneumonia: counts toward the high comorbidity tier only in an interaction pair.
Code first
CMS grouper convention 82, on all 14 codes. Code first:
- associated influenza, if applicable (J09.X1, J10.0-, J11.0-)
Every code in J15
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 |
|---|---|---|---|---|
| J15.0 | Pneumonia due to Klebsiella pneumoniae | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.1 | Pneumonia due to Pseudomonas | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.2 Pneumonia due to staphylococcus | ||||
| J15.20 | Pneumonia due to staphylococcus, unspecified | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.21 Pneumonia due to staphylococcus aureus | ||||
| J15.211 | Pneumonia due to Methicillin susceptible Staphylococcus aureusCMS: Pneumonia due to methicillin suscep staph | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.212 | Pneumonia due to Methicillin resistant Staphylococcus aureus | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.29 | Pneumonia due to other staphylococcus | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.3 | Pneumonia due to streptococcus, group B | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.4 | Pneumonia due to other streptococci | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.5 | Pneumonia due to Escherichia coli | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.6 Pneumonia due to other Gram-negative bacteria | ||||
| J15.61 | Pneumonia due to Acinetobacter baumannii | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.69 | Pneumonia due to other Gram-negative bacteria | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.7 | Pneumonia due to Mycoplasma pneumoniae | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.8 | Pneumonia due to other specified bacteria | Can lead a claim, code first applies | L | Whooping Cough and Pneumonia |
| J15.9 | Unspecified bacterial pneumonia | Can lead a claim, code first applies | L | 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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