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. M48- Other spondylopathies
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5. 2021 ICD-10-CM Diagnosis Code M48.1

2021 ICD-10-CM Diagnosis Code M48.1

Ankylosing hyperostosis [Forestier]

2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

• M48.1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2021 edition of ICD-10-CM M48.1 became effective on October 1, 2020.
• This is the American ICD-10-CM version of M48.1 - other international versions of ICD-10 M48.1 may differ.

• A disease of elderly men characterized by large osteophytes that bridge vertebrae and ossification of ligaments and tendon insertions.
• A rare degenerative disorder that affects the spine. It is characterized by ossification of ligaments resulting in calcifications along the sides of the spinal vertebrae.

• 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

• Type 1 Excludes: M85.8
  ICD-10-CM Diagnosis Code M85.8

  Other specified disorders of bone density and structure

  2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code

  Applicable To

  • Hyperostosis of bones, except skull
  • Osteosclerosis, acquired

  Type 1 Excludes

  • diffuse idiopathic skeletal hyperostosis [DISH] (M48.1)
  • osteosclerosis congenita (Q77.4)
  • osteosclerosis fragilitas (generalista) (Q78.2)
  • osteosclerosis myelofibrosis (D75.81)

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