J15.5 Pneumonia due to Escherichia coli

Billable ICD-10-CM code, FY2026. Acts as a Major Complication or Comorbidity (MCC) as a secondary diagnosis.

Applies from J15 Bacterial pneumonia, not elsewhere classified

Includes

• bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae

Excludes1 (never code together)

• chlamydial pneumonia (J16.0)
• congenital pneumonia (P23.-)
• Legionnaires' disease (A48.1)
• spirochetal pneumonia (A69.8)

Code first

• , if applicable, associated influenza (J09.X1, J10.0-, J11.0-)

Code also

• , if applicable, any associated condition such as:
• abscess (J85.1)
• aspiration pneumonia (J69.-)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 282 — Aspiration and Specified Bacterial Pneumonias
• CMS-HCC V22: HCC 114 — Aspiration and Specified Bacterial Pneumonias
• ESRD V24: HCC 114

MS-DRG index

Defines the logic of DRG(s) 177-179 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 482.82 Pneumonia due to escherichia coli [E. coli]

Code annotations containing back-references to J15.5

Back-references to J15

• Code Also: D81.82 Activated Phosphoinositide 3-kinase Delta Syndrome [APDS] ("pneumonia (J12-J18)")
• Use Additional: J95.89 Other postprocedural complications and disorders of respiratory system, not elsewhere classified ("bacterial or viral pneumonia (J12-J18)")

Diagnosis Index entries for J15.5

• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › broncho-, bronchial (confluent) (croupous) (diffuse) (disseminated) (hemorrhagic) (involving lobes) (lobar) (terminal) › Escherichia coli (E. coli)
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › Escherichia coli (E. coli)
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › in (due to) › Escherichia coli (E. coli)
• Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved) › lobar (disseminated) (double) (interstitial) › Escherichia coli (E. coli)

Nearby codes

• J15.211 Pneumonia due to Methicillin susceptible Staphylococcus aureus
• J15.212 Pneumonia due to Methicillin resistant Staphylococcus aureus
• J15.29 Pneumonia due to other staphylococcus
• J15.3 Pneumonia due to streptococcus, group B
• J15.4 Pneumonia due to other streptococci
• J15.5 Pneumonia due to Escherichia coli (this code)
• J15.6 Pneumonia due to other Gram-negative bacteria
• J15.61 Pneumonia due to Acinetobacter baumannii
• J15.69 Pneumonia due to other Gram-negative bacteria
• J15.7 Pneumonia due to Mycoplasma pneumoniae
• J15.8 Pneumonia due to other specified bacteria