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M26.0

M26.0: Major anomalies of jaw size

Non-billable headerICD-10-CM

M26.0 is a non-billable header ICD-10-CM code for major anomalies of jaw size. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Other codes that can never be billed with M26.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Q18Other congenital malformations of face and neck
  • Q38Other congenital malformations of tongue, mouth and pharynx
  • Q67.4Other congenital deformities of skull, face and jaw
  • Q75Other congenital malformations of skull and face bones

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M26.0

9 child codes. Green means billable.

Other codes under M26

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.