2026 ICD-10-CM Diagnosis Code P23.6Congenital pneumonia due to other bacterial agents
ICD-10-CM Codes›P00–P96›P19-P29›P23
- Billable — Valid for Submission
- MCC — Major Complication or Comorbidity
- Not Chronic
P23.6 is a billable ICD-10-CM diagnosis code for congenital pneumonia due to other bacterial agents. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 791, 793. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 68 closely related codes. Coders also document this condition as congenital bacterial pneumonia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Bacterial infections, Perinatal infections, and Respiratory perinatal condition.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Congenital bacterial pneumonia
- Congenital group A hemolytic streptococcal pneumonia
- Congenital pneumonia
- Infection caused by Enterococcus
- Infection caused by vancomycin resistant Enterococcus
- Pneumonia caused by Enterococcus
- Pneumonia caused by vancomycin resistant Enterococcus
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Congenital pneumonia due to Hemophilus influenzae
- Congenital pneumonia due to Klebsiella pneumoniae
- Congenital pneumonia due to Mycoplasma
- Congenital pneumonia due to Streptococcus, except group B
Use Additional Code
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Bacterial Infections
Bacteria are tiny organisms (living things) that have only one cell. Under a microscope, they look like balls, rods, or spirals. They can be found almost everywhere on Earth. There are lots of bacteria in and on your body. In fact, your body has about 10 times more bacteria cells than human cells.
The full article covers:
- What are bacteria?
- How do bacterial infections spread?
- What are the treatments for bacterial infections?
- Can bacterial infections be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert P23.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About P23.6Overview
What is the ICD-10 code for congenital pneumonia due to other bacterial agents?
The ICD-10-CM code for congenital pneumonia due to other bacterial agents is P23.6 (sometimes written as P236). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is P23.6 (Congenital pneumonia) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital pneumonia due to other bacterial agents on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does P23.6 group to?
When congenital pneumonia due to other bacterial agents is the principal diagnosis on an inpatient stay, it groups to MS-DRG 791, 793, with relative weights from 4.0590 to 4.1696 depending on complications. Higher weights mean higher Medicare reimbursement.
Is P23.6 a CC or MCC?
CMS lists P23.6 as an MCC (major complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 68 closely related codes in its exclusion list.
What is the ICD-9 equivalent of P23.6?
Under the General Equivalence Mappings, congenital pneumonia due to other bacterial agents converts to ICD-9-CM 770.0 (congenital pneumonia). The mapping is approximate, so confirm the match fits the documentation.
