ICD-10-CM Alphabetic Index · FY 2026 19 Entries
Hyperostosis in the ICD-10-CM Index ICD-10-CM
The main term Hyperostosis (monomelic) carries 19 index entries pointing to 13 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
19
Index Entries
13
Codes Referenced
—
Default Code
H
Letter
19 of 19 shown
ICD-10-CM
Index Entries Under Hyperostosis 19 entries · 13 codes
Hyperostosis (monomelic)
ankylosing (spine) M48.10
cervical region M48.12
cervicothoracic region M48.13
lumbar region M48.16
lumbosacral region M48.17
multiple sites M48.19
occipito-atlanto-axial region M48.11
sacrococcygeal region M48.18
thoracic region M48.14
thoracolumbar region M48.15
cortical (skull) M85.2
infantile M89.8X- Non-billable
frontal, internal of skull M85.2
interna frontalis M85.2
skeletal, diffuse idiopathic see Hyperostosis, ankylosing
skull M85.2
congenital Q75.8
vertebral, ankylosing see Hyperostosis, ankylosing
The info icon previews the code's description and billable status; the code link opens its full page with all notations.
Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
