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M40.2 - Lordosis: Causes, Symptoms and Treatment

M40.2 is the ICD-10 code for other lordosis of the spine. Lordosis refers to an excessive inward curvature of the vertebral column, most commonly in the lumbar or cervical region.

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Things worth knowing about "M40.2"

M40.2 is the ICD-10 code for other lordosis of the spine. Lordosis refers to an excessive inward curvature of the vertebral column, most commonly in the lumbar or cervical region.

What is M40.2?

M40.2 is a diagnostic code from the ICD-10 classification system (International Classification of Diseases, 10th Revision) and stands for other lordosis of the spine. This code is applied when a lordosis is present that does not fall under another more specific ICD-10 code within the M40 category.

Lordosis refers to an abnormally exaggerated inward (anterior) curvature of the spine. While a natural degree of lordotic curvature exists in the cervical (neck) and lumbar (lower back) regions of the spine, a pathological lordosis occurs when this curvature becomes excessive and causes symptoms or structural problems.

Causes

An excessive lordosis may result from a variety of underlying causes:

Muscular imbalances: Weakness of the abdominal or back muscles, or tightness of the hip flexors
Poor posture: Prolonged sitting in an incorrect position or sedentary lifestyle habits
Obesity: Excess body weight, particularly in the abdominal area, increases mechanical stress on the lumbar spine
Pregnancy: The shift in the center of gravity during pregnancy can temporarily increase lumbar lordosis
Congenital conditions: Structural abnormalities of the spine present from birth
Rickets: A nutritional deficiency disease impairing proper bone development in children
Neurological disorders: Certain conditions affecting muscle tone and posture control
Compensatory mechanisms: Lordosis can develop as a postural compensation for conditions such as kyphosis (rounded upper back)

Symptoms

Clinical presentation varies by severity. Mild cases may remain asymptomatic. More pronounced lordosis can cause:

Lower back pain, especially in the lumbar region
Muscle tension and stiffness in the back
Reduced range of motion in the spine
Pain during prolonged standing or walking
A visibly exaggerated inward curve of the lower back (hyperlordosis)
In severe cases: numbness or tingling in the legs due to nerve compression

Diagnosis

Lordosis is typically diagnosed using the following approaches:

Physical examination: The physician assesses posture and palpates the spine for abnormalities
X-ray imaging: Allows precise measurement of the degree of curvature and spinal alignment
MRI (Magnetic Resonance Imaging): Provides detailed images of intervertebral discs, nerves, and soft tissue structures
CT (Computed Tomography): Used when bony structural changes are suspected

Treatment

Treatment of M40.2 depends on the underlying cause and severity of the lordosis:

Conservative Treatment

Physical therapy: Targeted strengthening of core muscles, stretching exercises, and postural correction training
Pain management: Use of analgesics or anti-inflammatory medications as needed
Heat therapy and massage: To relieve muscle tension and improve comfort
Weight management: Weight loss in cases where obesity is a contributing factor
Orthotic devices/bracing: In selected cases, particularly in children and adolescents

Surgical Treatment

Surgery for lordosis is rarely indicated and is considered only in severe, symptomatic cases where conservative treatment has failed to provide adequate relief.

Prognosis

When diagnosed early and treated consistently, the prognosis for most patients is favorable. Regular physical activity, strengthening of the core musculature, and attention to posture are key factors in achieving long-term symptom relief and preventing progression.

References

World Health Organization (WHO): International Classification of Diseases, 10th Revision (ICD-10) - M40 Kyphosis and Lordosis. Geneva: WHO, 2019.
Standaert, C. J., Herring, S. A.: Expert opinion and controversies in musculoskeletal and sports medicine: spinous process apophysitis and lordosis. Archives of Physical Medicine and Rehabilitation, 2007.
Niethard, F. U., Pfeil, J., Biberthaler, P.: Dual Series Orthopaedics and Trauma Surgery. 8th Edition, Thieme Verlag, Stuttgart 2017.

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