M48.18 – Ankylosing hyperostosis [Forestier], sacral and sacrococcygeal region
ICD-10-CM 2027 diagnosis code · Spondylopathies
ICD-10-CM code
M48.18
- Code
M48.18(claims format:M4818)- Description
- Ankylosing hyperostosis [Forestier], sacral and sacrococcygeal region
- Short description
- Ankylosing hyperostosis, sacral and sacrococcygeal region
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M45-M49 Spondylopathies
- Parent codes
- M48 › M48.1
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M48.1 – Ankylosing hyperostosis [Forestier]
Applicable to:
- Diffuse idiopathic skeletal hyperostosis [DISH]
Index terms for M48.18
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in M48.1
- M48.10 – Ankylosing hyperostosis [Forestier], site unspecifiedBillable
- M48.11 – Ankylosing hyperostosis [Forestier], occipito-atlanto-axial regionBillable
- M48.12 – Ankylosing hyperostosis [Forestier], cervical regionBillable
- M48.13 – Ankylosing hyperostosis [Forestier], cervicothoracic regionBillable
- M48.14 – Ankylosing hyperostosis [Forestier], thoracic regionBillable
- M48.15 – Ankylosing hyperostosis [Forestier], thoracolumbar regionBillable
- M48.16 – Ankylosing hyperostosis [Forestier], lumbar regionBillable
- M48.17 – Ankylosing hyperostosis [Forestier], lumbosacral regionBillable
- M48.19 – Ankylosing hyperostosis [Forestier], multiple sites in spineBillable
Frequently asked questions
What is ICD-10 code M48.18?
M48.18 is the ICD-10-CM code for ankylosing hyperostosis [Forestier], sacral and sacrococcygeal region, in the block M45-M49 (Spondylopathies).
Is M48.18 a billable code?
Yes. M48.18 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M48.18 belong to?
It belongs to category M48 – Other spondylopathies.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.