Kyphosis ICD-10-CM Codes

Kyphosis ICD-10-CM Codes

Delve into this guide on Kyphosis ICD-10-CM Codes. Understand the specific codes and their billing implications.

By Ericka Pingol on Aug 8, 2025.

Fact Checked by Gale Alagos.

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What ICD-10 codes are used for kyphosis?

Kyphosis, an exaggerated forward rounding of the back, requires specific ICD-10 codes for accurate diagnosis and treatment. Here are the commonly used kyphosis ICD-10 codes:

  • M40.00: Postural kyphosis, site unspecified
  • M40.20: Unspecified kyphosis
  • M40.209: Unspecified kyphosis, site unspecified
  • M40.30: Flatback syndrome, site unspecified

Which kyphosis ICD codes are billable?

Determining which kyphosis ICD codes are billable is essential for healthcare providers. Here's an overview:

  • M40.00: Postural kyphosis, site unspecified: Yes, billable
  • M40.20: Unspecified kyphosis: No, not billable
  • M40.209: Unspecified kyphosis, site unspecified: Yes, billable
  • M40.30: Flatback syndrome, site unspecified: Yes, billable

Clinical information

Kyphosis is a spinal condition defined by an abnormal outward curvature of the spine, which can lead to a visible hunch in the upper back. While it most commonly affects the thoracic region, it may also involve the cervical or lumbar regions depending on the underlying cause and patient anatomy. This abnormal spinal curvature can be mild, asymptomatic, or severe enough to cause pain, stiffness, and postural issues.

Secondary kyphosis arises from an identifiable cause, such as osteoporosis-related compression fractures, neuromuscular conditions, infections, or congenital abnormalities. Other secondary kyphosis types include those due to trauma or degenerative diseases affecting spinal structure and stability. Postprocedural kyphosis, meanwhile, may occur after spinal surgery or medical interventions that inadvertently alter the spine’s alignment.

Kyphotic changes can also appear in the thoracolumbar region, where the thoracic and lumbar spine meet, and less frequently in the cervical or lumbar regions. Kyphosis and lordosis are both usually assessed and considered (whether curvature is outward or inward). Accurate documentation of the affected spinal region—whether thoracic, thoracolumbar, cervical, or lumbar—is essential for diagnosis, treatment planning, and appropriate ICD-10 coding.

Synonyms include

  • Hunchback
  • Roundback
  • Dowager's hump
  • Thoracic kyphosis
  • Scheuermann's disease (when it occurs in teenagers)
  • Kyphosis thoracic region
  • Unspecified kyphosis thoracic region

Commonly asked questions

Kyphosis can be caused by poor posture, spinal degeneration, vertebral fractures, congenital disabilities, or underlying conditions such as Scheuermann’s disease. It may also develop secondarily from infections, tumours, or trauma affecting the spine, including the cervical region.

Diagnosis typically involves a physical exam, medical history review, and imaging tests such as X-rays or MRI to evaluate spinal curvature and identify structural abnormalities. The degree and location of the curvature, such as in the thoracic or cervical region, help determine the underlying cause and treatment approach.

Surgery is usually reserved for severe kyphosis cases that cause significant pain, neurological symptoms, or progressive deformity. Most mild to moderate cases can be managed with physical therapy, bracing, and monitoring.

Related ICDs

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