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M48.06 – Spinal Stenosis Lumbar Region
M48.06 is the ICD-10 code for spinal stenosis of the lumbar region. The spinal canal in the lower back is narrowed, potentially causing back pain and leg symptoms.
Add as Preferred SourceThings worth knowing about "M48.06"
M48.06 is the ICD-10 code for spinal stenosis of the lumbar region. The spinal canal in the lower back is narrowed, potentially causing back pain and leg symptoms.
What Does M48.06 Mean?
The ICD-10 code M48.06 refers to spinal stenosis of the lumbar region (lower back, vertebrae L1–L5). In this condition, the bony canal through which the spinal cord and nerve roots pass becomes abnormally narrowed. This narrowing can compress nerve structures and lead to characteristic symptoms affecting the back and legs.
Causes
The most common cause is age-related degeneration of the spine (spondylarthrosis, degenerative changes). Other causes include:
- Herniated or bulging intervertebral discs
- Thickening of the ligamentum flavum (yellow ligament)
- Bony outgrowths (osteophytes)
- Spondylolisthesis (vertebral slippage)
- Congenitally narrow spinal canal
- Inflammatory conditions such as ankylosing spondylitis
Symptoms
Typical complaints with lumbar spinal stenosis include:
- Lower back pain
- Neurogenic claudication: activity-related pain, numbness, or weakness in one or both legs when walking or standing
- Relief of symptoms when sitting or leaning forward (flexion opens the spinal canal)
- Radiating pain into the buttocks and legs (pseudoradiculopathy)
- In severe cases: bladder or bowel dysfunction
Diagnosis
Diagnosis is established through clinical assessment and imaging:
- Medical history and physical examination: Assessment of typical symptoms and neurological testing
- MRI of the lumbar spine: Gold standard for visualizing nerve compression and the extent of stenosis
- CT scan: Useful for evaluating bony structures
- Conventional X-ray: Initial orientation and detection of degenerative changes
- Electrophysiology (EMG/ENG): When nerve damage is suspected
Treatment
Conservative Treatment
In many cases, conservative management is attempted first:
- Physiotherapy and targeted back exercises to strengthen the core muscles
- Pain management with NSAIDs (e.g., ibuprofen, diclofenac) or analgesics
- Epidural corticosteroid injections for local anti-inflammatory effect
- Heat therapy and physical modalities
Surgical Treatment
When symptoms are persistent or severe, especially when neurological deficits are present, surgery may be necessary:
- Laminectomy: Removal of parts of the vertebral arch to widen the spinal canal
- Laminotomy / interlaminar decompression: A less invasive alternative
- Interspinous process implants: Spacers placed between the spinous processes
- Spinal fusion: Used when additional spinal instability is present
Prognosis
With timely and appropriate treatment, the quality of life of affected individuals can be significantly improved. Many patients respond well to conservative measures. Complete recovery is rarely possible, as the underlying degenerative changes cannot be reversed.
References
- World Health Organization (WHO): ICD-10 Classification of Mental and Behavioural Disorders, Code M48.06, Spinal Stenosis, Lumbar Region.
- Kreiner DS et al. - Evidence-Based Clinical Guidelines for Multidisciplinary Spine Care: Diagnosis and Treatment of Degenerative Lumbar Spinal Stenosis. North American Spine Society (NASS), 2011.
- Lurie J, Tomkins-Lane C. - Management of lumbar spinal stenosis. BMJ. 2016;352:h6234.
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