Skip to main content

M26 vs Q75

M26 (Dentofacial anomalies [including malocclusion]) compared with Q75 (Other congenital malformations of skull and face bones), 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. Q75 carries an Excludes1 note covering M26: “dentofacial anomalies [including malocclusion] (M26.-)”

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

M26Dentofacial anomalies [including malocclusion]Q75Other congenital malformations of skull and face bones
Billing statusNon-billable header

Report instead: M26.00, M26.01, M26.02, M26.03, M26.04

Non-billable header

Report instead: Q75.001, Q75.002, Q75.009, Q75.01, Q75.021

ClassificationM00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99)
DefinitionDentofacial anomalies [including malocclusion] is a non-billable ICD-10-CM category code (M26).Other congenital malformations of skull and face bones is a non-billable ICD-10-CM category code (Q75).
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources