Immunodeficiency 81 C5543540
A rare genetic disorder that impairs the immune system, making affected individuals highly susceptible to severe infections. Treatment focuses on infection prevention and immune system support.
Key facts at a glance
- ICD-10
- D89.9
- ICD-11
- 3A00.0
- Body system
- immunologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Recurrent bacterial infections
Severe herpesvirus infection
Generalized symptoms
(immunologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Failure to thrive
(immunologic)Autoimmune lymphoproliferative syndrome
(immunologic)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
Drug therapy and clinical monitoring
Active treatment with regular monitoring by a healthcare provider is recommended.
Immunoglobulin Replacement Therapy
Regular immunoglobulin replacement as cornerstone treatment to compensate for immune deficiency and prevent serious bacterial infections.
Hematopoietic Stem Cell Transplantation Evaluation
Comprehensive evaluation for possible curative treatment through allogeneic hematopoietic stem cell transplantation in eligible patients with severe disease.
Additional treatment options
Comprehensive Immunologic Monitoring
Regular assessment of immunoglobulin levels, lymphocyte subsets, and vaccine responses to guide treatment adjustments and prognosis.
monitoringNutritional Optimization
High-protein, vitamin-enriched diet with adequate calories to support immune system function and maintain lean body mass.
dietaryStress Reduction and Immune Support
Mind-body interventions including meditation, yoga, and adequate sleep to reduce stress-induced immune suppression.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Immunodeficiency 81 C5543540?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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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