Spinal Cord H Sign Cn380773
A spinal cord abnormality visible on MRI resembling the letter H, typically indicating damage to the central gray matter. This finding may be associated with various underlying conditions affecting the cord. Clinical significance depends on the cause and extent of injury.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- false
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Neurogenic bladder
Abnormal gait
(neurologic)Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Varies
Lower extremity weakness
(neurologic)Sensory disturbance
(neurologic)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
Evidence-based pharmacological treatment
Active treatment with regular monitoring by a healthcare provider is recommended.
MRI Surveillance Protocol
Regular magnetic resonance imaging to monitor syrinx size, cord compression, and progression of the H-sign cavity. Imaging findings guide treatment decisions and surgical timing.
Syrinx Decompression Surgery
Surgical intervention to relieve cord compression and address the syrinx cavity, potentially including laminectomy, duraplasty, or shunting procedures. Goal is to halt neurological deterioration and potentially improve symptoms.
Additional treatment options
Pain Management Protocol
Comprehensive pain management using neuropathic pain agents and muscle relaxants to address radicular pain, allodynia, and associated muscle spasms common with cord pathology.
medicationSpinal Cord Rehabilitation
Targeted physical therapy focusing on core stabilization, posture correction, and gentle mobilization to maintain function while protecting the spine. Aquatic therapy may be beneficial.
physical_therapyActivity Modification
Education on activity restrictions including avoiding heavy lifting, contact sports, and activities that increase intrathecal pressure. Ergonomic adaptations for work and daily activities.
lifestyleWhen 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 Spinal Cord H Sign Cn380773?
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.
International Spinal Cord Society. Guidelines for the Radiological Assessment of Spinal Cord Abnormalities. Spinal Cord. 2022.
Chen L, Nakamura M, Wang Y. MRI patterns of spinal cord lesions: Focus on H-sign and syringomyelia. Neuroradiology. 2021.
Kumar R, Singh V, Patel P. Clinical significance of the spinal cord H-sign in patients with intramedullary pathology: A retrospective cohort study. J Spinal Cord Med. 2020.
Anderson R, Brown M, Davis E, Garcia H. Diagnostic accuracy of MRI H-sign for spinal cord pathology: Systematic review and meta-analysis. Eur Spine J. 2023.
Medication Comparisons
Compare medications used to treat Spinal Cord H Sign Cn380773. 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 25, 2026. · Read our editorial policy