ICD-10-CM diagnosis code
M48.10 Ankylosing hyperostosis [Forestier], site unspecified
- Billable
- Yes, a complete code (FY2026)
- Category
- M48 Other spondylopathies
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Other codes in M48
119 complete codes in this category.
- M48.04Spinal stenosis, thoracic region
- M48.05Spinal stenosis, thoracolumbar region
- M48.061Spinal stenosis, lumbar region without neurogenic claudication
- M48.062Spinal stenosis, lumbar region with neurogenic claudication
- M48.07Spinal stenosis, lumbosacral region
- M48.08Spinal stenosis, sacral and sacrococcygeal region
- M48.10Ankylosing hyperostosis [Forestier], site unspecified
- M48.11Ankylosing hyperostosis [Forestier], occipito-atlanto-axial region
- M48.12Ankylosing hyperostosis [Forestier], cervical region
- M48.13Ankylosing hyperostosis [Forestier], cervicothoracic region
- M48.14Ankylosing hyperostosis [Forestier], thoracic region
- M48.15Ankylosing hyperostosis [Forestier], thoracolumbar region
Documentation tips
- Make sure the note supports every element of the title, “Ankylosing hyperostosis [Forestier], site unspecified”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M48.
The international WHO ICD-10 also has M48, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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