ICD-10-CM 2027
ICD-10 code for hyperostosis
Choose a code from the options below based on the documentation.
From the official ICD-10-CM alphabetic index entry “Hyperostosis (monomelic)”. Page updated September 29, 2026.
About coding hyperostosis
The official ICD-10-CM index doesn't give a single default code for hyperostosis; the code depends on the details below.
More specific hyperostosis codes (official index)
- ankylosing (spine) M48.10 — Ankylosing hyperostosis [Forestier], site unspecified
- cervical region M48.12 — Ankylosing hyperostosis [Forestier], cervical region
- cervicothoracic region M48.13 — Ankylosing hyperostosis [Forestier], cervicothoracic region
- lumbar region M48.16 — Ankylosing hyperostosis [Forestier], lumbar region
- lumbosacral region M48.17 — Ankylosing hyperostosis [Forestier], lumbosacral region
- multiple sites M48.19 — Ankylosing hyperostosis [Forestier], multiple sites in spine
- occipito-atlanto-axial region M48.11 — Ankylosing hyperostosis [Forestier], occipito-atlanto-axial region
- sacrococcygeal region M48.18 — Ankylosing hyperostosis [Forestier], sacral and sacrococcygeal region
- thoracic region M48.14 — Ankylosing hyperostosis [Forestier], thoracic region
- thoracolumbar region M48.15 — Ankylosing hyperostosis [Forestier], thoracolumbar region
- cortical (skull) M85.2 — Hyperostosis of skull
- infantile M89.8X — Other specified disorders of bone
- frontal, internal of skull M85.2 — Hyperostosis of skull
- interna frontalis M85.2 — Hyperostosis of skull
- skeletal, diffuse idiopathic
- skull M85.2 — Hyperostosis of skull
- congenital Q75.8 — Other specified congenital malformations of skull and face bones
- vertebral, ankylosing
Common questions about hyperostosis ICD-10 codes
What is the ICD-10 code for ankylosing hyperostosis?
- M48.10 — Ankylosing hyperostosis [Forestier], site unspecified.
What is the ICD-10 code for cortical hyperostosis?
- M85.2 — Hyperostosis of skull.
What is the ICD-10 code for interna frontalis hyperostosis?
- M85.2 — Hyperostosis of skull.
What is the ICD-10 code for skull hyperostosis?
- M85.2 — Hyperostosis of skull.