Home > 2013 ICD-9-CM Diagnosis Codes > Diseases Of The Musculoskeletal System And Connective Tissue 710-739 > Dorsopathies 720-724 > Spondylosis and allied disorders 721-
2013 ICD-9-CM Diagnosis Code 721.6
Ankylosing vertebral hyperostosis
- ICD-9-CM 721.6 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
721.6 Alternative Terminology
- Ankylosing hyperostosis of cervical (neck) spine
- Ankylosing hyperostosis of cervical spine
- Ankylosing hyperostosis of cervicothoracic spine
- Ankylosing hyperostosis of lumbar spine
- Ankylosing hyperostosis of lumbosacral spine
- Ankylosing hyperostosis of multiple sites in spine
- Ankylosing hyperostosis of occipito-atlanto-axial
- Ankylosing hyperostosis of sacral and sacrococcygeal
- Ankylosing hyperostosis of the cervical spine
- Ankylosing hyperostosis of thoracic spine
- Ankylosing hyperostosis of thoracolumbar spine
- Ankylosing hyperostosis of vertebra
- Diffuse idiopathic skeletal hyperostosis of cervicothoracic spine
- Diffuse idiopathic skeletal hyperostosis of lumbar spine
- Diffuse idiopathic skeletal hyperostosis of lumbosacral spine
- Diffuse idiopathic skeletal hyperostosis of multiple sites of spine
- Diffuse idiopathic skeletal hyperostosis of occipitoatlantoaxial spine
- Diffuse idiopathic skeletal hyperostosis of sacral and sacrococcygeal spine
- Diffuse idiopathic skeletal hyperostosis of thoracic spine
- Diffuse idiopathic skeletal hyperostosis of thoracolumbar spine
- Disseminated idiopathic skeletal hyperostosis
Convert 721.6 to ICD-10-CM 
ICD-9-CM 721.6 converts approximately to:
- 2013 ICD-10-CM M48.10 Ankylosing hyperostosis [Forestier], site unspecified
ICD-9-CM Volume 2 Index entries containing back-references to 721.6:
vertebral 
with spondylosis - see Spondylosis
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 721.6 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2013 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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