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  6. 2024 ICD-10-CM Code M46
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code M46

Other inflammatory spondylopathies

ICD-10-CM Code:
M46
ICD-10 Code for:
Other inflammatory spondylopathies
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    (M00–M99)
    • Spondylopathies
      (M45-M49)
      • Other inflammatory spondylopathies
        (M46)

M46 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other inflammatory spondylopathies. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Other inflammatory spondylopathies

Non-specific codes like M46 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for other inflammatory spondylopathies:

  • M46.0 for Spinal enthesopathy - NON-BILLABLE CODE

  • Use M46.00 for Spinal enthesopathy, site unspecified - BILLABLE CODE

  • Use M46.01 for Spinal enthesopathy, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.02 for Spinal enthesopathy, cervical region - BILLABLE CODE

  • Use M46.03 for Spinal enthesopathy, cervicothoracic region - BILLABLE CODE

  • Use M46.04 for Spinal enthesopathy, thoracic region - BILLABLE CODE

  • Use M46.05 for Spinal enthesopathy, thoracolumbar region - BILLABLE CODE

  • Use M46.06 for Spinal enthesopathy, lumbar region - BILLABLE CODE

  • Use M46.07 for Spinal enthesopathy, lumbosacral region - BILLABLE CODE

  • Use M46.08 for Spinal enthesopathy, sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.09 for Spinal enthesopathy, multiple sites in spine - BILLABLE CODE

  • Use M46.1 for Sacroiliitis, not elsewhere classified - BILLABLE CODE

  • M46.2 for Osteomyelitis of vertebra - NON-BILLABLE CODE

  • Use M46.20 for Osteomyelitis of vertebra, site unspecified - BILLABLE CODE

  • Use M46.21 for Osteomyelitis of vertebra, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.22 for Osteomyelitis of vertebra, cervical region - BILLABLE CODE

  • Use M46.23 for Osteomyelitis of vertebra, cervicothoracic region - BILLABLE CODE

  • Use M46.24 for Osteomyelitis of vertebra, thoracic region - BILLABLE CODE

  • Use M46.25 for Osteomyelitis of vertebra, thoracolumbar region - BILLABLE CODE

  • Use M46.26 for Osteomyelitis of vertebra, lumbar region - BILLABLE CODE

  • Use M46.27 for Osteomyelitis of vertebra, lumbosacral region - BILLABLE CODE

  • Use M46.28 for Osteomyelitis of vertebra, sacral and sacrococcygeal region - BILLABLE CODE

  • M46.3 for Infection of intervertebral disc (pyogenic) - NON-BILLABLE CODE

  • Use M46.30 for Infection of intervertebral disc (pyogenic), site unspecified - BILLABLE CODE

  • Use M46.31 for Infection of intervertebral disc (pyogenic), occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.32 for Infection of intervertebral disc (pyogenic), cervical region - BILLABLE CODE

  • Use M46.33 for Infection of intervertebral disc (pyogenic), cervicothoracic region - BILLABLE CODE

  • Use M46.34 for Infection of intervertebral disc (pyogenic), thoracic region - BILLABLE CODE

  • Use M46.35 for Infection of intervertebral disc (pyogenic), thoracolumbar region - BILLABLE CODE

  • Use M46.36 for Infection of intervertebral disc (pyogenic), lumbar region - BILLABLE CODE

  • Use M46.37 for Infection of intervertebral disc (pyogenic), lumbosacral region - BILLABLE CODE

  • Use M46.38 for Infection of intervertebral disc (pyogenic), sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.39 for Infection of intervertebral disc (pyogenic), multiple sites in spine - BILLABLE CODE

  • M46.4 for Discitis, unspecified - NON-BILLABLE CODE

  • Use M46.40 for Discitis, unspecified, site unspecified - BILLABLE CODE

  • Use M46.41 for Discitis, unspecified, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.42 for Discitis, unspecified, cervical region - BILLABLE CODE

  • Use M46.43 for Discitis, unspecified, cervicothoracic region - BILLABLE CODE

  • Use M46.44 for Discitis, unspecified, thoracic region - BILLABLE CODE

  • Use M46.45 for Discitis, unspecified, thoracolumbar region - BILLABLE CODE

  • Use M46.46 for Discitis, unspecified, lumbar region - BILLABLE CODE

  • Use M46.47 for Discitis, unspecified, lumbosacral region - BILLABLE CODE

  • Use M46.48 for Discitis, unspecified, sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.49 for Discitis, unspecified, multiple sites in spine - BILLABLE CODE

  • M46.5 for Other infective spondylopathies - NON-BILLABLE CODE

  • Use M46.50 for Other infective spondylopathies, site unspecified - BILLABLE CODE

  • Use M46.51 for Other infective spondylopathies, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.52 for Other infective spondylopathies, cervical region - BILLABLE CODE

  • Use M46.53 for Other infective spondylopathies, cervicothoracic region - BILLABLE CODE

  • Use M46.54 for Other infective spondylopathies, thoracic region - BILLABLE CODE

  • Use M46.55 for Other infective spondylopathies, thoracolumbar region - BILLABLE CODE

  • Use M46.56 for Other infective spondylopathies, lumbar region - BILLABLE CODE

  • Use M46.57 for Other infective spondylopathies, lumbosacral region - BILLABLE CODE

  • Use M46.58 for Other infective spondylopathies, sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.59 for Other infective spondylopathies, multiple sites in spine - BILLABLE CODE

  • M46.8 for Other specified inflammatory spondylopathies - NON-BILLABLE CODE

  • Use M46.80 for Other specified inflammatory spondylopathies, site unspecified - BILLABLE CODE

  • Use M46.81 for Other specified inflammatory spondylopathies, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.82 for Other specified inflammatory spondylopathies, cervical region - BILLABLE CODE

  • Use M46.83 for Other specified inflammatory spondylopathies, cervicothoracic region - BILLABLE CODE

  • Use M46.84 for Other specified inflammatory spondylopathies, thoracic region - BILLABLE CODE

  • Use M46.85 for Other specified inflammatory spondylopathies, thoracolumbar region - BILLABLE CODE

  • Use M46.86 for Other specified inflammatory spondylopathies, lumbar region - BILLABLE CODE

  • Use M46.87 for Other specified inflammatory spondylopathies, lumbosacral region - BILLABLE CODE

  • Use M46.88 for Other specified inflammatory spondylopathies, sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.89 for Other specified inflammatory spondylopathies, multiple sites in spine - BILLABLE CODE

  • M46.9 for Unspecified inflammatory spondylopathy - NON-BILLABLE CODE

  • Use M46.90 for Unspecified inflammatory spondylopathy, site unspecified - BILLABLE CODE

  • Use M46.91 for Unspecified inflammatory spondylopathy, occipito-atlanto-axial region - BILLABLE CODE

  • Use M46.92 for Unspecified inflammatory spondylopathy, cervical region - BILLABLE CODE

  • Use M46.93 for Unspecified inflammatory spondylopathy, cervicothoracic region - BILLABLE CODE

  • Use M46.94 for Unspecified inflammatory spondylopathy, thoracic region - BILLABLE CODE

  • Use M46.95 for Unspecified inflammatory spondylopathy, thoracolumbar region - BILLABLE CODE

  • Use M46.96 for Unspecified inflammatory spondylopathy, lumbar region - BILLABLE CODE

  • Use M46.97 for Unspecified inflammatory spondylopathy, lumbosacral region - BILLABLE CODE

  • Use M46.98 for Unspecified inflammatory spondylopathy, sacral and sacrococcygeal region - BILLABLE CODE

  • Use M46.99 for Unspecified inflammatory spondylopathy, multiple sites in spine - BILLABLE CODE

Patient Education


Ankylosing Spondylitis

Ankylosing spondylitis is a type of arthritis of the spine. It causes inflammation between your vertebrae, which are the bones that make up your spine, and in the joints between your spine and pelvis. In some people, it can affect other joints.

AS is more common and more severe in men. It often runs in families. The cause is unknown, but it is likely that both genes and factors in the environment play a role.

Early symptoms of AS include back pain and stiffness. These problems often start in late adolescence or early adulthood. Over time, AS can fuse your vertebrae together, limiting movement. Some people have symptoms that come and go. Others have severe, ongoing pain.

A diagnosis of AS is based on your medical history and a physical examination. You may also have imaging or blood tests.

AS has no cure, but medicines can relieve symptoms and may keep the disease from getting worse. Eating a healthy diet, not smoking, and exercising can also help. In rare cases, you may need surgery to straighten the spine.

NIH: National Institute of Arthritis and Musculoskeletal and Skin Disease


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.