1. ICD-10-CM Codes
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2. M00-M99 Diseases of the musculoskeletal system and connective tissue
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3. M45-M49 Spondylopathies
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4. M46- Other inflammatory spondylopathies
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5. 2021 ICD-10-CM Diagnosis Code M46.20

2021 ICD-10-CM Diagnosis Code M46.20

Osteomyelitis of vertebra, site unspecified

2016 2017 2018 2019 2020 2021 Billable/Specific Code

• M46.20 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2021 edition of ICD-10-CM M46.20 became effective on October 1, 2020.
• This is the American ICD-10-CM version of M46.20 - other international versions of ICD-10 M46.20 may differ.

• Acute osteomyelitis of vertebra
• Chronic osteomyelitis of vertebra
• Osteomyelitis of the spine
• Osteomyelitis of vertebra
• Osteomyelitis vertebra, acute

• 456 Spinal fusion except cervical with spinal curvature, malignancy, infection or extensive fusions with mcc
• 457 Spinal fusion except cervical with spinal curvature, malignancy, infection or extensive fusions with cc
• 458 Spinal fusion except cervical with spinal curvature, malignancy, infection or extensive fusions without cc/mcc
• 539 Osteomyelitis with mcc
• 540 Osteomyelitis with cc
• 541 Osteomyelitis without cc/mcc

Convert M46.20 to ICD-9-CM

• 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
• 2017 (effective 10/1/2016): No change
• 2018 (effective 10/1/2017): No change
• 2019 (effective 10/1/2018): No change
• 2020 (effective 10/1/2019): No change
• 2021 (effective 10/1/2020): No change

• Osteomyelitis (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis) M86.9
  ICD-10-CM Diagnosis Code M86.9

  Osteomyelitis, unspecified

  2016 2017 2018 2019 2020 2021 Billable/Specific Code

  Applicable To

  • Infection of bone NOS
  • Periostitis without osteomyelitis
  • vertebra M46.20

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.