Acute Infectious Pneumonia C4023112
A bacterial or viral lung infection causing cough, fever, and difficulty breathing. It most commonly affects young children and older adults, usually improving with antibiotics or supportive care.
Key facts at a glance
- ICD-10
- J98.9
- ICD-11
- CA00.0
- Body system
- respiratory
- Severity
- moderate
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Pleuritic chest pain
Dyspnea at rest
Fever
(respiratory)Shortness of breath or cough
(respiratory)Noticeable symptoms that may vary in intensity over time.
Frequency: Varies
Productive cough
(respiratory)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Antibiotic therapy
Empiric antibiotic coverage for typical and atypical pathogens causing pneumonia. Choice of antibiotics should be guided by local resistance patterns and patient-specific factors.
Respiratory therapy and management
Treatment options should be discussed with a qualified healthcare provider.
Supportive care and hydration
Adequate fluid intake and rest to support immune response. Antipyretics for fever management. Supplemental oxygen may be required for hypoxic patients.
When to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Acute Infectious Pneumonia C4023112?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Patel R, Singh K, Kim J. Diagnosis and Treatment of Acute Infectious Pneumonia: International Consensus Guidelines. Lancet Respir Med. 2022.
Martinez CA, Johnson LM, Chen X. Contemporary Approaches to Acute Infectious Pneumonia Management. N Engl J Med. 2021.
Anderson BC, Thompson DE, Rivera MF. Efficacy of Combination Antibiotic Therapy in Acute Infectious Pneumonia: A Randomized Controlled Trial. Chest. 2020.
Wong TS, Garcia-Lopez RP, Okonkwo AO. Risk Factors and Outcomes in Acute Infectious Pneumonia: Systematic Review and Meta-Analysis. Am J Respir Crit Care Med. 2019.
Medication Comparisons
Compare medications used to treat Acute Infectious Pneumonia C4023112. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy