M27.8 vs M85.0
M27.8 (Other specified diseases of jaws) compared with M85.0 (Fibrous dysplasia (monostotic)), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. M85.0 carries an Excludes2 note covering M27.8: “fibrous dysplasia of jaw (M27.8)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M27.8Other specified diseases of jaws | M85.0Fibrous dysplasia (monostotic) | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Other specified diseases of jaws is a billable ICD-10-CM diagnosis code (M27.8). | Fibrous dysplasia (monostotic) is a non-billable ICD-10-CM category code (M85.0). |
| Includes | Cherubism Exostosis Fibrous dysplasia Unilateral condylar hyperplasia | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources