M27.0 vs M27.8
M27.0 (Developmental disorders of jaws) compared with M27.8 (Other specified diseases of jaws), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. M27.0 carries an Excludes1 note covering M27.8: “unilateral condylar hyperplasia or hypoplasia (M27.8)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| M27.0Developmental disorders of jaws | M27.8Other specified diseases of jaws | |
|---|---|---|
| Billing status | Billable | Billable |
| 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 | Developmental disorders of jaws is a billable ICD-10-CM diagnosis code (M27.0). | Other specified diseases of jaws is a billable ICD-10-CM diagnosis code (M27.8). |
| Includes | Latent bone cyst of jaw Stafne's cyst Torus mandibularis Torus palatinus | 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